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Meade LXD75 SN6 (06057504) Telescope

1. Maxell LR41 or equivalent Net telescope weight 15 Ibs Net tripod weight 35 Ibs 6 f 8 Model AR 6AT Specifications Optical design Achromatic Refractor Clear aperture 6 152mm Focal length s sua nin o yii 1200mm Focal ratio photographic speed 1 8 Resolving power 0 74 arc secs Coalitigs iiu DOREM Meade EMC Super Multi Coatings Mountilig nu cte ene e cere Die cast aluminum Input Voltage 12v DC Alignment ctis German type equatorial mount Slew Speeds etes 1x sidereal to 4 5 sec in 9 increments THpOd iai etes Variable height field tripod Accessories sese 8 x 50mm finder 1 25 diagonal Super Pl ssl 26mm eyepiece 1 25 and 2 eyepiece holders Battery pack for 8 D cell batteries user supplied Autostar Controller Polar Finder Reticle Batteries Maxell LR41 or equivalent Net telescope weight 27 lbs Net tripod weight a 45 Ibs 8 f 10 Model SC 8AT Specifications Optical design Schmidt Cassegrain Clear aperture 8 203mm Focal length 2 2 halen 2000mm Focal ratio photographic speed 10
2. Object Menu Almost all observing with Autostar is performed using the Object menu category Note Exceptions include Guided Tour and Landmark Survey See GO TO SATURN page 21 for an example of observing using the Object menu Also see USING THE GUIDED TOUR page 22 Autostar contains many libraries of viewable objects such as stars planets comets nebulae and so forth When one of these objects is selected from a library Autostar moves your telescope if properly aligned and points it at the selected object The Object Menu options include Solar System is a library of the eight planets Earth is not included in order out from the Sun followed by the Moon asteroids and comets Constellation is a library of all 88 Northern and Southern Hemisphere constellations When this menu option is chosen and a constellation name appears on the first line of the screen press GO TO once to change the second line to the name of the bright est star in the constellation Press GO TO a second time to slew the telescope to that star Use the Scroll keys to cycle through the list of stars in the constellation from brightest to dimmest Deep Sky is a library of objects outside our Solar System such as nebulae star clus ters galaxies and quasars Star is a library of stars listed in different categories such as named double variable or nearby Satellite is a library of Earth orbiting objects such as the International Space Station
3. f 5 Resolving power 0 74 arc secs Coatings s n eee ba ined Meade EMC Super Multi Coatings Ultra High Transmission Coating optional Mo ntimg a uA ub usul aussi Die cast aluminum Input Voltage emm 12v DC Alignment u U S ukukus German type equatorial mount Slew Speeds SN 8 1x sidereal to 4 5 sec in 9 increments SN 8EC 2x sidereal to 4 5 sec in 4 increments Tripod enact eene Variable height field tripod ACCOSSONICS uui ai eee i 8 x 50mm finder T Adapter Super Pl ssl 26mm eyepiece 1 25 and 2 eyepiece holders Battery pack for 8 D cell batteries user supplied SN 6 Autostar Controller SN 6EC Electronic Controller Polar Finder Reticle Batteries Maxell LR41 or equivalent Net telescope weight 13 Ibs Net tripod weight a 35 Ibs 8 f 4 Model SN 8AT SN 8EC Specifications Optical design Schmidt Newtonian Clear aperture 8 203mm Focal length n eene 812mm Focal ratio photographic speed f 4 Resolving power 0 56 arc secs Coatings tete edes Meade EMC Super Multi Coatings Ultra High Transmission Coating optional Mounting inei Die cast alumi
4. In the early 17th century Italian Scientist Galileo using a telescope smaller than your LXD75 turned it skyward instead of looking at the distant trees and mountains What he saw and what he realized about what he saw has forever changed the way mankind thinks about the universe Imagine what it must have been like being the first human to see moons revolve around the planet Jupiter or to see the changing phas es of Venus Because of his observations Galileo correctly realized Earth s movement and position around the Sun and in doing so gave birth to modern astronomy Yet Galileo s telescope was so crude he could not clearly make out the rings of Saturn Galileo s discoveries laid the foundation for understanding the motion and nature of the planets stars and galaxies Building on his foundation Henrietta Leavitt deter mined how to measure the distance to stars Edwin Hubble gave us a glimpse into the possible origin of the universe Albert Einstein unraveled the crucial relationship of time and light and 21st century astronomers are currently discovering planets around stars outside our solar system Almost daily using sophisticated successors to Galileo s telescope such as the Hubble Space Telescope and the Chandra X Ray Telescope more and more mysteries of the universe are being probed and under stood We are living in the golden age of astronomy Unlike other sciences astronomy welcomes contributions from amateurs Much of the
5. Open Clusters are loose groupings of young stars all recently formed from the same diffuse nebula The Pleiades is an open cluster 410 light years away Fig 59 Through the LXD75 Series numerous stars are visible Constellations are large imaginary patterns of stars believed by ancient civilizations to be the celestial equivalent of objects animals people or gods These patterns are too large to be seen through a telescope To learn the constellations start with an easy grouping of stars such as the Big Dipper in Ursa Major Then use a star chart to explore across the sky Galaxies are large assemblies of stars nebulae and star clusters that are bound by gravity The most common shape is spiral such as our own Milky Way but galaxies can also be elliptical or even irregular blobs The Andromeda Galaxy M31 is the closest spiral type galaxy to our own This galaxy appears fuzzy and cigar shaped It is 2 2 million light years away in the constellation Andromeda located between the large W of Cassiopeia and the great square of Pegasus LXD75 TIPS Further Study This manual gives only the briefest introduction to astronomy If you are interested in pursuing further studies in astronomy a few topics are suggested below that are worth reading up on Try looking up some of these in the optional Autostar glossary Also included below is a small sampling of books magazines and organizations that you might find helpful
6. Unscrew the safety cap 23 Fig 1d from the shaft Holding the counterweight 21 Fig 1d firmly in one hand slip the counterweight to approximately the mid point of the counterweight shaft 22 Fig 1d Tighten the counterweight lock knob to a firm feel Replace the safety cap Cradle Assembly Slot Fig 7 Attach cradle to base mount ing slot and tighten locking knobs Cradle Rings Knobs Fig 8 Place optical tube in rings and loosely tighten cradle ring lock knobs Note Model SC 8 users After completing step 6 refer to APPENDIX E page 62 step 1 for information on how to attach the SC optical tube to the mount Viewfinder Mounting Screws and Nuts Fig 9a Viewfinder assembly Newtonian reflector models Fig 9b Viewfinder assembly refrac tor and Schmidt Newtonian and Schmidt Cassegrain models models 10 Note If the counterweight ever slips the safety cap 23 Fig 1d prevents the counterweight from sliding entirely off the shaft Always leave the safety cap in place when the counterweight is on the shaft Set the latitude Setting the latitude is easier if it is set before you attach the opti cal tube to the assembly Locate the latitude dial 28 Fig 1d note that there is a triangular pointer above the dial located on the mount The pointer is not fixed it moves as the mount moves Determine the latitude of your obs
7. 1a over the optical tube Loosely tighten the cradle ring lock knobs just to hold the tube securely in place until you balance it See BALANCING THE TELESCOPE page 13 Attach viewfinder bracket Newtonian models Fig 9a Locate the viewfinder bracket screws Fig 9a and remove the nuts from the screws Slide the holes in the viewfinder bracket over the viewfinder bracket screws Replace the nuts and tighten to a firm feel only Attach viewfinder tube Back off the viewfinder collimation screws 5 Fig 1b and slide the viewfinder tube into the bracket Orient the viewfinder eyepiece as depicted in Fig 1b Tighten the collimation screws to a firm feel See ALIGNING THE VIEWFINDER page 14 Attach viewfinder bracket Achromatic refractor Schmidt Newtonian and Schmidt Cassegrain models 15 Fig 1b and Fig 9b Slide the track on the bottom of the viewfinder bracket into the slot in the viewfinder mounting assem bly which is already attached to the tube To secure the viewfinder to the mount ing assembly tighten the two thumbscrews to a firm feel only Attach viewfinder tube Back off the viewfinder collimation screws 5 Fig 1b and slide the viewfinder tube into the bracket Point the viewfinder eyepiece toward the focuser assembly See Fig 10b Tighten the collimation screws to a firm feel See ALIGNING THE VIEWFINDER page 14 Insert the eyepiece Schmidt Newtonian and Newtonian models Fig 10a Lift to remove the dust cap
8. Event database includes Sunrise and Sunset calculates the time that the Sun rises or sets on the current date Find rise and set times for other dates by entering a new date into the Setup Date menu Moonrise and Moonset calculates the time that the Moon rises or sets on the current date Find rise and set times for other dates by entering a new date into the Setup Date menu Moon Phases displays the date and time of the next Full New 1st Quarter and 3rd Quarter Moon Meteor Showers provides information on upcoming meteor showers such as the Perseids the Leonids etc Also lists the dates of the showers and when they reach maximum Note Meteors are fast moving objects that cover large areas of the sky and are usually best observed with the naked eye Solar Eclipse lists upcoming Solar Eclipses including the date and type total annu lar or partial of eclipse and the location and time of the first and last contacts of the Moon s shadow Use the Scroll Up and Down keys to display the available data Remember never use a telescope to look at the Sun See WARNING to the left Lunar Eclipse lists upcoming Lunar Eclipses including the date and type total par tial penumbral of eclipse Use the Scroll Up and Down keys to display the available data Min Minimum of Algol is the minimum brightness of the dramatic eclipsing binary star system Algol It is relatively close at a distance of 100 light years Every 2 8 da
9. Example To navigate to the Select Item Setup menu option when the Select Item Object menu is displayed 1 Press the Scroll Down key five times or the Scroll Up key once The screen in Fig 20 displays two lines of information The top line shows the current menu level The second line displays an option which may be selected within that menu level Some options are choices that select the next menu level down The Scroll keys move up and down within the list of available options showing one option at a time When the desired option is displayed on the second line press the ENTER key to choose that option and move down one menu level Press the MODE key to leave a level e g the wrong menu option is chosen Important Note No matter how many levels into Autostar are traveled each press of the MODE key moves up a level until the top level Select Item is reached Once in the Select Item level press MODE to return to the topmost level Select Item Object Autostar Navigation Exercise To demonstrate how the Autostar menu structure works the following exercise calcu lates Sunset time so an evening observing session can be planned Note Before proceeding with this exercise Autostar must be properly ini tialized and aligned see pages 19 and 21 To Calculate Sunset time 1 Press the MODE key several times until Select Item Object is displayed 2 Press the Scroll Down key once to display the Event op
10. MAS PNO uq dn esie eu u 1esie eu ayey Bupoe1 9AUQ UIL jueo1eg DEG IV jue2Jed vu zv oey egAiv oned vu zv uiBue7 jeoo4 Jepo N edoosele edooseje Bunes beq eun ra 1Je S 991Uu L JES OML Jejg euo BIT ejes dem p109 edoog Jed adoos dee s ening x1eupue1 uuej y jeneg deeg py 1senuoo Ipy sseuuuBug peueis Dumeo BuiujeM uns suondo Aejdsiq jseb6ns uoneouiuBelA Mal JO Pla 9 e eoeide A43 HO 8 UO jes uue y dois u eis si HI didduuvotigviszod oad Ggeuss Exon Ayesso 5 WAIT pajas eonsJogs 1euung BOI S OS 191UlM xouinb3 jeu19A xouinb3 uuniny JoB y Jo UI sesdio3 eun sesdi o3 ejos sp isin spluwa Spiuoo1 spuney SPIUOHO SplasJod spuenby eyeq spuenby e13 spu 1 spilueipeno SJOMOUS 10919 A AYO PAE XON AYO S KON uoo MON 1X9N uoo I 1IX9N s seyd Uoo suoo N SHUOON WUBIN y JO SIEIS sdno19 18 S 1seg sjufiuoL ueil 195195 q N Auejeueld S19jouJeJeg 1Ip3 uoJees uelis eswolg jnuep ejejleg ppv 1o l S Sxyeuipue1 ups ejejeg ppv 1919S sjoefqo 1 sn ups eiejeg ppv 1o l s lvll les o aiqeue eiqnoq Bojeeo OVS powen Tels on ee ngaN saixejey joe qo peureN Ayg deeq o3 epeulojpuy suole a Suod s ewoyg Sp1019 SY uoo on i8il alas Want to learn more about observing satellites See page 34 Want to learn more about Landmarks See page 34
11. Release the Dec lock 17 Fig 1d of the tripod so that the optical tube 10 Fig 1a may be rotated Rotate the optical tube until it points North or South in the Southern Hemisphere Then re tighten the lock Locate Polaris the North Star if necessary to use as an accurate reference for due North or Sigma Octantis in the Southern Hemisphere See LOCATING THE CELESTIAL POLE page 51 4 f you have not already done so determine the latitude of your observing location See APPENDIX C LATITUDE CHART page 57 for a list of latitudes of major cities around the world Use the latitude T handle screws 26 Fig 1d to tilt the tele Scope mount so that the pointer indicates the correct latitude of your viewing loca tion on the latitude dial 28 Fig 1d See step 6 page 12 for more information 5 If steps 1 through 4 above were performed with reasonable accuracy your tele scope is now sufficiently well aligned to Polaris the North Star for you to begin making observations Once the mount has been placed in the polar home position as described above the latitude angle need not be adjusted again unless you move to a different geographi cal location i e a different latitude Important Note For almost all astronomical observing requirements approximate settings of the telescope s latitude and other settings are acceptable Do not allow undue attention to precise settings of polar home position of the telescope to interfere
12. Resolving power seeem 0 56 arc secs Coatings u claret eds Meade EMC Super Multi Coatings Ultra High Transmission Coating optional Mounting iiti RR Qa Die cast aluminum Input Voltage esee 12v DC Alignment eren German type equatorial mount Slew Speeds 1x sidereal to 4 5 sec in 9 increments PIP OG iiie eR RES DIARI HEURES Variable height field tripod ACC SSOFIOS ces iei e diee 8 x 50mm finder 1 25 diagonal Super Pl ssl 26mm eyepiece 1 25 and 2 eyepiece holders Battery pack for 8 D cell batteries user supplied Autostar Controller Polar Finder Reticle Batteries Maxell LR41 or equivalent Net telescope weight 24 Ibs Net tripod weight 45 Ibs 6 f 5 Model N 6EC Specifications Optical design eene Newtonian Reflector Clear aperture 6 152mm Focal length uuu pene 762mm Focal ratio photographic speed f 5 Resolving power eee 0 74 arc secs Coatings eee d d ce totes Meade EMC Super Multi Coatings Ultra High Transmission Coating optional MOUNTING 5 oc ei Eton Die cast aluminum Input Voltage m 12v DC Alignrment u in centes German type equatorial mount Slew Speeds a 1x si
13. Spreader Bar Tripod Mounting Base Tripod Legs Spreader Tension Knob Caution Using products other than standard Meade accessories may cause damage to the telescope s internal electronics and may void the Meade warranty Want to learn more about the eyepieces available for your LXD75 Series telescope See OPTIONAL ACCESSORIES page 37 Oo Want to learn more about aligning the viewfinder See page 14 e Want to learn more about attaching the viewfinder See page 12 11 Want to learn more about assembling your telescope See ASSEMBLING YOUR TELESCOPE page 11 EC Handbox users see Appendix D page 58 for more informa tion The Meade LXD75 Series models are versatile high resolution telescopes Supplied with either an Electronic Controller or an Autostar handbox the LXD75 Series models offer unmatched mechanical and electronic performance The LXD75 Series telescopes reveal nature in an ever expanding level of detail Observe the feather structure of an eagle from 50 yards or study the rings of the plan et Saturn from a distance of 800 million miles Focus beyond the Solar System and observe majestic nebulae ancient star clusters and remote galaxies Meade LXD75 Series telescopes are instruments fully capable of growing with your interest and can meet the requirements of the most demanding advanced observer Refer to Figures
14. When the test is complete light 1 remains on lights 2 3 and 4 turn off Use the four Arrow keys 1 Fig 49 to slew the telescope to the desired object To change the slew speed press SPEED 9 Fine adjust the position of the object with the Electronic Controller Arrow keys so that it is centered in the viewfinder The object is now ready to be viewed through the telescope s eyepiece Tracking Rates In polar mode the Electronic Controller normally tracks objects at the sidereal rate see TRACKING OBJECTS page 17 For most observing sessions once the telescope has been polar aligned and the tracking motor activated there is little need to change this speed For objects like the Moon or a comet that move at slightly different rates the Electronic Controller Arrow keys 1 Fig 49 are sufficient to move the telescope slightly as the object very slowly moves off center through the eyepiece field To change the tracking rate for extended observations of an object not moving at the sidereal rate follow the procedure for the appropriate hemisphere Use the following procedure to change tracking rates when using the Northern Hemisphere polar mode Refer to Fig 52a 1 Press and hold MODE 5 Fig 49 until the Mode function is active e lights 1 and 2 are on steady lights 3 and 4 signify whatever tracking mode was last cho sen 2 Press SPEED 3 Fig 49 until lights 1 2 and 3 are on steady with light 4 blink in
15. and model AR 5EC are equipped with an Electronic Controller handbox rather than the Autostar Handbox Several of the following procedures such as Tracking Objects and Initializing Autostar to name but a few are rele vant only to models equipped with the Autostar handbox and do not apply to the EC mod els For more information about the EC handbox see APPENDIX D EC HANDBOX page 58 Note Autostar does not require batteries the tele scope s batteries supply power to Autostar Fig 2 The Autostar Handbox Tour the Cosmos with Just the Push of a Button Control of most LXD75 Series telescope models excluding the EC models see mar gin note is through the operation of Autostar Nearly all functions of the telescope are accomplished with just a few pushes of Autostar s buttons Some of the major features of Autostar are m Automatic GO TO capability Automatically move the telescope to any of the more than 30 000 objects stored in the object library gm Take a guided tour of the best celestial objects to view on any given night of the year m Download the latest satellite data and software revisions directly from the Meade website www meade com and share software with other Autostar enthusiasts B Access a glossary of astronomical terms m Fully automatic tracking of celestial objects Features The Autostar Computer Controller provides control of virtually every telescope func tion wi
16. available within a menu option the current option is usually displayed first and highlighted by a right point ing arrow Definition Initialization is a proce dure that ensures that Autostar operates correctly When you first use Autostar it doesn t yet know where the observa tion location site is or the time or date of the obser vation session You will enter information such as the current time and date and observation location Autostar uses this informa tion to precisely calculate the location of celestial objects such as stars and planets and to automati cally move your telescope correctly for various opera tions Moving Through Autostar s Menus Autostar Models Only Autostar s menus are organized for quick and easy navigation Press ENTER 2 Fig 2 to go deeper into Autostar menu levels Press MODE 3 Fig 2 to move back toward the top menu level Press the Scroll keys 7 Fig 2 to move up and down through the options avail able for each menu level Press the Arrow keys 5 Fig 2 to enter characters Press the Number keys 6 Fig 2 to enter digits Initializing Autostar Autostar Models Only This exercise describes how to initialize Autostar Note Normally you will enter the Time and Date at the beginning of each observing session but you will only perform the full Initialization proce dure i e entering the Location information and selecting the model
17. knowledge we have on subjects such as comets meteor showers double and vari able stars the Moon and our solar system comes from observations made by ama teur astronomers So as you look through your Meade LXD75 Series telescope keep in mind Galileo To him a telescope was not merely a machine made of glass and metal but something far more a window of incredible discovery Each glimpse offers a potential secret waiting to be revealed Autostar Glossary Be sure to make use of Autostar s Glossary feature The Glossary menu provides an alphabetical listing of definitions and descriptions of common astronomical terms Access directly through the Glossary menu or through hypertext words embedded in Autostar See GLOSSARY MENU page 27 for more information Objects in Space Listed below are some of the many astronomical objects that can be seen with your LXD75 Series telescope The Moon The Moon is on average a distance of 239 000 miles 380 000km from Earth and is best observed during its crescent or half phase when Sunlight strikes the Moon s sur face at an angle It casts shadows and adds a sense of depth to the view Fig 56 No shadows are seen during a full Moon causing the overly bright Moon to appear flat and rather uninteresting through the telescope Be sure to use a neutral Moon fil ter when observing the Moon Not only does it protect your eyes from the bright glare of the Moon but it also helps enhance contrast providi
18. page 16 O Number Keys Press to input digits O to 9 When data is not being entered the Number keys can be used to change the slew speed To operate just press a number key 1 is the slowest speed 9 is the highest speed Press the Number key O to turn on and off the red utility light on the top of the handbox 9 Scroll Keys Press to access options within a selected menu The menu is dis played on the first line of the screen Options in that menu are displayed one at a time on the second line Press the Scroll keys to move through the options Press and hold a Scroll key to move quickly through the options gt Key Press to access the Help function Help provides on screen information on how to accomplish whatever task is currently active Hold down the key and then follow the prompts on the display to access details of Autostar functions in the Help feature The Help system is essentially an on screen instruction manual If you have a question about an Autostar operation e g INITIALIZATION ALIGNMENT etc hold down the key and follow the directions that scroll on the second line When satisfied with the Help provided press MODE to return to the original screen and continue with the chosen procedure coil cord Port Plug one end of the Autostar coil cord see into this port located at the bottom of the Autostar handbox and the other end into the HBX port of the computer control panel A Fig 1e coii Cora P
19. 52 29 1 77 31 1 67 39 1 33 32mm 52 24 2 18 25 2 05 32 1 64 40mm 44 19 2 31 20 2 17 25 1 73 Fig 24 Series 4000 Eyepieces Super Wide Angle Eyepieces 6 elements 1 25 O D except as noted 13 8mm 67 55 1 21 59 1 14 74 0 91 18mm 67 42 1 58 45 1 49 56 1 19 24 5mm 67 31 2 15 33 2 02 41 1 62 32mm 67 2 O D 24 2 81 25 2 64 32 2 11 40mm 67 2 O D 19 3 52 20 3 30 25 2 64 Ultra Wide Angle Eyepieces 8 elements 1 25 O D except as noted 4 7mm 84 162 0 52 173 0 49 216 0 39 6 7mm 84 114 0 74 121 0 69 152 0 55 8 8mm 84 1 25 2 O D 87 0 97 92 0 91 115 0 73 Fig 25 140 2x Barlow Lens 14mm 84 1 25 2 O D 54 1 54 58 1 45 73 1 16 5 f 9 3 6 t 8 8 f 10 Eyepiece Apparent Field Power Actual Field Power Actual Field Power Actual Field Super Pl ssl Eyepieces 4 elements 1 25 O D 6 4mm 52 184 0 28 188 0 28 313 0 17 9 7mm 52 122 0 43 124 0 42 206 0 25 12 4mm 52 95 0 55 97 0 54 161 0 32 15mm 52 79 0 66 80 0 65 133 0 39 Fig 26 905 Variable Polarizer 20mm 52 59 0 88 60 0 87 100 0 52 26mm 52 45 1 15 46 1 13 77 0 68 32mm 52 37 1 41 38 1 39 63 0 83 40mm 44 30 1 49 30 1 47 50 0 88 Super Wide Angle Eyepieces 6 elements 1 25 O D except as noted 13 8mm 67 86 0 78 87 0 77 145 0 46 18mm 67 66 1 02 67 1 01 111 0 60 24 5m
20. 8 Optical Tube 62 Appendix F Basic Astronomy 63 D 12 Fig 1a The LXD75 Series Telescope Optical Assembly Schmidt Newtonian model with Autostar handbox shown Electronic Controller model users see Appendix D page 58 Fig 1b Close up of Focuser and Viewfinder Assembly Schmidt Newtonian shown See Fig 1a for overview For a close up of the refractor focuser assembly see Fig 10b page 13 Fig 1c The LXD75 Series Tripod Fig 1d The LXD75 Series Mount insert shows opposite side of Mount HBX 12vDC ON OFF AUX Fig 1e The LXD75 Series Computer Control Panel see above Legend 1 Eyepiece Thumbscrew 2 Eyepiece Holder 3 Eyepiece 4 Viewfinder VF 5 VF Collimation Screws 6 VF Front Cell 7 MF Bracket 8 Focus Knobs 9 Corrector Dust Cover 10 Optical Tube Cradle Assembly Autostar Handbox Cradle Ring Lock Knobs Cradle Rings VF Bracket Screws Focus Lock Knob Dec Lock Polar VF Cap Dec Setting Circle Counterweight Shaft Base Counterweight Lock Knobs Counterweight Shaft Counterweight Safety Cap Computer Control Panel R A Motor Drive Latitude Adjustment Handles Azimuth Control Knobs Latitude Dial Polar Alignment VF Polar Alignment Reticle LED R A Setting Circle R A Setting Circle Lock Knob R A Lock Dec Motor Drive T Handle Lock and Shaft
21. A setting circle lock knob 32 Fig 1d and turn the R A set ting circle to read the correct R A coordinate of the bright star lock the R A setting circle lock knob onto the object Next loosen the R A lock 33 Fig 1d and turn the telescope in R A to read the correct R A coordinate of the object Tighten the R A lock 33 Fig 1d If the procedure has been followed carefully the desired object should now be in the telescopic field of a low power eyepiece If you do not immediately see the object you are seeking try searching the adjacent sky area Keep in mind that with the 26mm eyepiece the field of view of the LXD75 Series is about 0 5 Because of its much wider field the viewfinder may be of signifi cant assistance in locating and centering objects after the setting circles have been used to locate the approximate position of the object See USING AUTOSTAR TO FIND OBJECTS NOT IN THE LIBRARIES page 33 for infor mation on how to manually enter coordinates into Autostar Locating the Celestial Pole To get basic bearings at an observing location take note of where the Sun rises East and sets West each day After the site is dark face North by pointing your left shoul der toward where the Sun set To precisely point at the pole find the North Star Polaris by using the Big Dipper as a guide Fig 42 Polar Alignment Autostar provides several different methods of Polar Alignment Easy One Star Two Star and Th
22. German North displays and a scrolling message prompts you to set your telescope in the polar home position See SETTING THE POLAR HOME POSITION page 17 for a description of this procedure Press ENTER after you finish the procedure Fig 44 A Elevation Alignment B Attitude Alignment 4 Autostar then chooses three stars from its database to align upon When the telescope slews to a star for alignment it may not appear in the field of view in the eyepiece Use the Arrow keys to move the telescope until the star is visible and centered in the eyepiece The alignment star should be easily recognized and be the brightest star in the area of the sky where the telescope is pointing See WHICH ONE S THE ALIGNMENT STAR page 18 for more information When the star is centered press ENTER Repeat the procedure for the second and third alignment stars Note Autostar locates alignment stars based on the date time and location entered The alignment stars may change from night to night All that is required is for the observer to center the selected star in the eyepiece when prompted Method 2 Axis Alignment Procedures In order for the equatorial mount to accurately point to astronomical objects using the GO TO feature of the Autostar handbox the optical axis of the optical tube must be aligned with the R A axis of the mount In most cases the telescope will perform ade quately without making any adjustments but perfor
23. Observing the Sun even for the smallest fraction of a second will result in instant and irreversible eye damage as well as physical damage to the telescope itself 5 Check this alignment on a celestial object such as a bright star or the Moon and make any necessary refinements using the method outlined above in steps 3 and 4 With this alignment performed objects first located in the wide field viewfinder will also appear in the telescope s eyepiece Choosing an Eyepiece A telescope s eyepiece magnifies the image formed by the telescope s main optics Each eyepiece has a focal length expressed in millimeters or mm The smaller the focal length the higher the magnification For example an eyepiece with a focal length of 9mm has a higher magnification than an eyepiece with a focal length of 26mm Your telescope comes supplied with a Super Pl ssl SP 26mm eyepiece which gives a wide comfortable field of view with high image resolution Note Seeing conditions vary widely from night to night and site to site Turbulence in the air even on an apparently clear night can distort images If an image appears fuzzy and ill defined back off to a lower power eyepiece for a more well resolved image see Fig 15a and 15b below Note For a list of magnifi cation ratings of the eye pieces available for the LXD75 Series telescopes see OPTIONAL ACCES SORIES page 37 Low power eyepieces off
24. WI 53187 Organizations Astronomical League Executive Secretary 5675 Real del Norte Las Cruces NM 88012 The Astronomical Society of the Pacific 390 Ashton Ave San Francisco CA 94112 The Planetary Society 65 North Catalina Ave Pasadena CA 91106 And watch Jack Horkheimer Star Gazer on your local PBS station VRRRRRRRRRRRRRRRRRRRRRNRRRRRRRRRRRRRRRG MEADE LIMITED WARRANTY Every Meade telescope spotting scope and telescope accessory is warranted by Meade Instruments Corporation Meade to be free of defects in materials and workmanship for a period of ONE YEAR from the date of original purchase in the U S A and Canada Meade will repair or replace a product or part thereof found by Meade to be defective provided the defective part is returned to Meade freight prepaid with proof of purchase This warranty applies to the original purchaser only and is non transferable Meade products purchased outside North America are not included in this warranty but are covered under separate warranties issued by Meade international distributors RGA Number Required Prior to the return of any product or part a Return Goods Authorization RGA number must be obtained from Meade by writing or calling 949 451 1450 Each returned part or product must include a written statement detailing the nature of the claimed defect as well as the owner s name address and phone number This warranty is not valid in cases where the product
25. all pointing positions are possible with the polar alignment reticle as the tripod is a limiting factor as to how far the optical tube and mount can be moved 8 Tighten the R A Lock 33 Fig 1d Return the optical tube to the home position Note Remember to turn off the polar alignment reticle LED Enhancement Methods Autostar provides four methods of enhancing your telescope s pointing precision 1 Three Star Alignment 2 Axis Alignment 3 Axis Alignment with Autostar and 4 Smart Drive Training Periodic Error Correction Method 1 is recommended for all users but especially for the beginner and Methods 2 3 and 4 are recommended for the Advanced observer Method 1 Three Star Alignment Using Autostar Perform this procedure at night This method is similar to Two Star Alignment see page 51 but in this method Autostar chooses three stars to align upon Two stars on one side of the sky and a third star on the opposite side of the sky In order to get the most out of this procedure make sure you perform the Train the Drive procedure see page 20 The combination of Training your Drive and perform ing Three Star Alignment will optimize your pointing accuracy To perform the Three Star Alignment 1 Keep pressing MODE until Select Item Setup is displayed Press ENTER 2 Setup Align displays Press ENTER Align Easy displays Press the Scroll Down key until Align Three Star displays Press ENTER 3
26. error until you develop a feel for which collimation screw to turn in order to change the image in any given way Note A small paper ring is attached to the primary mir ror This ring was attached at the factory for purposes of laser collimation The ring will not diminish your tele scope s imaging capabilities and does not need to be removed o o Fig 32 Correct 1 and incorrect 2 collimation as viewed during a star test 4 Perform an actual star test to confirm the accuracy of steps 1 through 3 Using the SP 26mm eyepiece point the telescope at a moderately bright second or third mag nitude star and center the image in the main telescope s field of view 5 Bring the star s image slowly in and out of focus until you see several disks sur rounding the star s center If steps 1 through 3 were done correctly you will see con centric centered with respect to each other circles 1 Fig 32 An improperly collimated instrument will reveal oblong or elongated circles 2 Fig 32 Adjust the 3 collimating screws on the primary mirror housing until the circles are concentric on either side of the focus In summary the 4 adjustment screws on the plastic diagonal mirror housing change the tilt of the secondary mirror so that it is correctly centered in the focuser draw tube and so that the primary mirror appears centered when looking into the focuser The 3 collimating knobs on the primary mi
27. eyepiece holders unscrew the attached holder from the focuser and thread on the other holder Adjust the height of the tripod Adjust the height of the tripod by loosening the tripod lock knobs Fig 11 Extend the sliding inner section of each tripod leg to the desired length then tighten each knob Adjust the tripod to a height that is comfortable for viewing Install Batteries Insert eight user supplied D size batteries into the battery holder oriented as shown in the diagram on the battery slots of the holder Plug the battery pack into the 12v DC connector B Fig 1e on the computer control panel See Fig 12 Caution Use care to install batteries as indicated by the battery com partment Follow battery manufacturer s precautions Do not install bat teries backwards or mix new and used batteries Do not mix battery types If these precautions are not followed batteries may explode catch fire or leak Improperly installed batteries void your Meade warranty Always remove the batteries if they are not to be used for a long period of time Q o 0 ce Bar Fig 13b Reticle LED assembly A Reticle Container B LED C Batteries D Battery Holder E Cap Remove Plastic Strip from Reticle LED The polar alignment reticle LED 30 Fig 1d contains two watch batteries The reticle s LED is shipped with a plastic strip between the two batteries to protect battery life Unthread both the cap E Remove t
28. fills about 1096 of the eyepiece field diameter If the dark central spot is offset in i e not concentric with the ring of light your telescope s optical system is misaligned and requires collimation Follow these steps for collimation of the optical system a The only adjustments possible or necessary on the SC 8 models are from the three screws Fig 33b located at the edge of the outer surface of the secondary mirror housing 1 2 Fig 33a Defocused star images Misaligned 1 2 Aligned Fig 33b Collimation screws Caution Do not force the three collimation screws past their normal travel and do not loosen them more than two full turns in a counterclockwise direction or the secondary mirror may come loose from its support You will find that the adjustments are very sensitive usually requiring only one half turn or less to produce the desired result b While looking at the defocused star image notice which direction the darker shad ow is offset in the ring of light or notice which part of the ring is the thinnest 1 Fig 33a Place your index finger in front of the telescope so that it touches one of the collimation set screws You will see the shadow of your finger in the ring of light Move your finger around the edge of the black plastic secondary mirror sup port until you see the shadow of the finger crossing the thinnest part of the ring of light At this point look at the front of the telescope where
29. for two seconds or more R A and Dec coordi nates display Press GO TO Object Position and a set of coordinates displays Enter the R A and Dec coordinates of any celestial object using Number keys overwriting the coordinates currently dis played As soon as the coor dinates are entered Autostar slews the telescope to the coordinates Note that the tel escope must be initialized see page 19 placed in the Home position see page 17 and aligned see page 21 for this procedure to operate properly However if you wish to store the coordinates of an object in memory use the method described at the right 11 Press MODE Site Edit displays 12 Using the Arrow keys scroll to Site Select The site you have just edited dis plays Press ENTER to select the site or press MODE to exit Using Autostar to Find Objects Not in the Libraries In this procedure you will enter coordinates of celestial objects that do not appear in any of the Autostar libraries You will enter the object s name and R A and Dec coor dinates required information You may also enter the object s magnitude and size optional information Although Autostar contains an extensive database of celestial objects stars nebulae planets etc that you can observe you may eventually want to view objects that are not part of a library Autostar provides a feature that allows you to enter an object s R A and Dec coordinates in the Use
30. key and light 4 goes out signifying a tracking rate 0 596 slower than sidereal Note that when the Mode function is active the tracking motor stops To restart the tracking motor press MODE again Experiment with this function to get the right speed Press OUT to set the track ing rate Then press MODE and look through the eyepiece Continue pressing OUT and MODE until the object remains centered with little or no drifting in the eyepiece Note The tracking rate can be decreased by up to 65 5 Press and hold MODE until only a single light is on This exits the Mode function If Northern or Southern Hemisphere polar mode was chosen the motor drive starts operating at the sidereal rate 6 Use the four Arrow keys 1 Fig 49 to slew the telescope to the desired object To change the slew speed press SPEED Changing the Polar Mode To use the Electronic Controller to change to Northern or Southern Hemisphere polar mode use the following procedure This procedure also allows you to select a Tracking Disabled setting Refer to Fig 53 1 Complete the SETTING THE POLAR HOME POSITION procedure described on page 17 2 Complete steps 2 through 8 as described in TO MOVE THE TELESCOPE USING THE ELECTRONIC CONTROLLER page 59 to initialize the Electronic Controller 3 Press and hold MODE until lights 1 and 2 are on steady Ignore lights 3 and 4 they may or may nor appear as depicted in the figures to the left how these lights appear d
31. lighter plug The LXD75 telescope may be powered for a full night s observing without risk of car battery drain 62 T Adapter The T Adapter is the basic means of prime focus photography through all Meade Schmidt Cassegrain models Thread the T Adapter on to the rear cell of your telescope followed by a T Mount for your 35mm camera and the camera body is rigidly coupled to the telescope Piggyback Brackets Piggyback photography is one of the most popular and easiest ways to get started in astrophotography Attach your 35mm camera with its own 35mm to 250mm lens atop your LXD75 in equatorial mode and guiding the camera through the main telescope wide field photos of the Milky Way of remarkable detail and clarity can be taken Dew Shield In moist climates water particles suspended in the atmosphere may condense on the front surface of the telescope s correcting plate This dew formation may be inhibited to a significant extent by the addition of a dew shield essentially an extension tube attaching to the front cell of the telescope 608 for Meade Schmidt Cassegrain SC 8 model 905 Variable Polarizer 1 25 1A Skylight Filter The 905 system includes 2 Polarizer filters mounted in a specially machined cell for glare reduction in observ ing the Moon Rotate the thumbscrew at the side of the unit to achieve light trans mission between 5 and 25 of its original value The 905 inserts into the diago Fig 30 Opt
32. the Hubble Space Telescope Global Positioning System GPS satellites and geo synchronous orbit satellites User Objects allows the user to define and store in memory deep sky objects of spe cific interest that are not currently in the Autostar libraries See Using Autostar to Find Objects Not in the Libraries page 33 for more information Landmarks stores the location of terrestrial points of interest in the permanent Autostar database Important Note To use the Landmark function the telescope must be located and aligned exactly as when the landmark was added to the data base gm Select To select a Landmark already in the database see ADD below choose the Select option and scroll through the list Press ENTER to select a Landmark then press GO TO and the telescope slews to the object m Add To add a Landmark choose the Add option Enter a name for the Landmark Locate and center the Landmark in the eyepiece then press ENTER Identify is an exciting feature for an observer who wants to scan the night sky and start exploring After the telescope has been properly aligned use the Autostar Arrow keys to move about in the sky Then follow this procedure Important Note Only use the Arrow keys to move the telescope during the Identify procedure Do not loosen the telescope locks or move the base or alignment is lost 1 When a desired object is visible in the eyepiece keep pressing MODE until the Select Item Object m
33. to choose another object from Autostar s database However the procedure will be identical to the one used for observing Saturn 1 After the telescope is aligned Select Item Object displays Press ENTER If Select Item Object is not currently displayed press MODE repeatedly until it displays then press ENTER 2 Object Solar System displays Press ENTER 3 Solar System Mercury displays Use the Scroll Down key until Solar System Saturn displays 4 Press ENTER Calculating displays Then Saturn and a set of coordinates dis plays Saturn s and other planets coordinates change throughout the year Fig 17 The planet Saturn is over 800 million miles from the Earth Press GO TO Saturn Slewing displays and the telescope slews until it finds Saturn You may need to use the Arrow keys to center Saturn precisely in the eye piece Autostar then automatically slews moves the telescope so that it tracks Saturn or whatever other object you may have chosen Saturn remains centered in the eyepiece Using the Guided Tour Autostar Models Only This example demonstrates using Tonight s Best Guided Tour 1 After observing Saturn keep pressing MODE until Select Item Object displays again Press the Scroll Down key twice Select Item Guided Tour displays Press ENTER Guided Tour Tonight s Best displays Press ENTER Note If you wish to try out other Guided Tours press the Scroll D
34. 1a through 1e for the following features o Eyepiece Thumbscrew Tightens the eyepiece see in place Tighten to a firm feel only 2 Eyepiece Holder Holds eyepiece in place Holders supplied for both 1 25 and 2 eyepieces Diagonal not shown achromatic refractor and Schmidt Cassegrain models only Provides a more comfortable right angle viewing position Slide the diagonal directly into the eyepiece holder see and tighten the thumbscrew on the eye piece holder to a firm feel only See page 13 for a photo and more information Eyepiece Place the supplied Super Pl ssl 26mm eyepiece into the eyepiece holder or the diagonal and tighten in place with the eyepiece thumbscrew see 9 The eyepiece magnifies the image collected in the optical tube 8 x 50mm all models except N 6EC Newtonian or 6 x 30mm N 6EC Newtonian only Viewfinder A low power wide field sighting scope with crosshairs that enables easy centering of objects in the telescope eyepiece see Viewfinder Collimation Screws 6 Use these screws to adjust the alignment of the viewfinder Viewfinder Front Cell and Locking Ring Adjust the front cell to focus the viewfinder See step 3 page 14 for more details The viewfinder is supplied with a small dust cover placed over the front cell Viewfinder Bracket Holds the viewfinder in place oo 8 O Focus Knobs Moves the telescope s focuser drawtube in a finely controlled motion to achieve precise image f
35. 36 Before adjusting the primary mirror tilt screws first unscrew by several turns use either a hex wrench or pliers the three hex head primary mirror lock screws 2 Fig 36 which are also located on the rear surface of the primary mirror cell and which alternate around the cell s circumference with the three Phillips head screws Then by trial and error turn the primary mirror Phillips head tilt screws 3 Fig 36 until you develop a feel for which way to turn each screw to center the reflection of your eye in the drawtube An assistant is helpful in this operation With your eye centered as shown in Fig 37 turn the three hex head primary mirror lock screws 2 Fig 36 to re lock the tilt angle of the primary mirror The telescope s optical system is now aligned or collimated This collimation should be re checked from time to time with small adjustments per steps 1 2 and or 3 above effected as required to keep the optics well aligned len o f E e p EZ a Q Fig 39 6 f 5 Model SN 6AT SN 6EC Specifications Optical design Schmidt Newtonian Clear aperture 6 152mm Focal length eese 762mm Focal ratio photographic speed
36. Add a Site to the user defined site list In this example you will choose a city and add it to the database list You will then select the site to enable it 1 Navigate to the Setup Site menu Press ENTER 2 Scroll through the options until Site Add displays Press ENTER 3 Scroll through the list of countries states Press ENTER when the country state you wish to add displays 4 Scroll through the list of cities Press ENTER when the city you wish to add dis plays The Site is now added to the database You may add 5 sites using this method the sixth site is the site you added during the manual initialization process 5 To choose a site navigate to Setup Select Press ENTER Scroll through the list of sites When the desired site displays press ENTER To Edit a Site In this procedure you will enter a location that is not available in the Autostar data base by editing data of a nearby site You will edit the location s name latitude longi tude and the time zone shift You will then select the site to enable it You will need to know the latitude and longitude of your location to perform this pro cedure 1 Using the Add option choose a site on the list that is closest to your observing site and press ENTER so that the site is added to your observing sites list Choosing a site already on the list as opposed to using the Custom feature makes it easier to edit as the Time Zone value may not need to be cha
37. Choosing this option turns off tracking for astro nomical objects which is not useful for the viewing of terrestrial objects such as those in the Landmark database Be sure to change this option back to Astronomical when you wish to view celestial objects again Press MODE once Select Item Setup displays Press the Scroll Down key once and Select Item Object displays Press ENTER Object Solar System displays Press the Scroll Up key twice and Object Landmarks displays Press ENTER Landmark Select displays Press the Scroll Down key once Landmark Add displays Press ENTER Landmark Name displays Using Arrow keys enter a name for the landmark you wish to add to the database When finished press ENTER Center Landmark Press Enter displays Using only the Arrow keys do not man ually move the telescope move the telescope to the desired landmark and cen ter the object in the eyepiece Press ENTER The object is now stored in memo ry Landmark Add displays If you wish to add more landmarks repeat steps 5 through 7 To Select a landmark from the database 1 4 Make sure the telescope is located and aligned exactly as when the desired land mark was entered into memory Display the Landmark Select menu option Press ENTER Use the Scroll keys to scroll through the list of objects you have previously entered When the desired object displays press ENTER to select the object Use the Sc
38. E ALIGNING THE VIEWFINDER CHOOSING AN EYEPIECE and OBSERVING BY MOVING THE TELESCOPE MANUALLY pages 11 16 Other sec tions relevant to EC users include OBSERVE THE MOON and SETTING POLAR HOME POSITION page 17 and PHOTOGRAPHY OPTIONAL ACCESSORIES GENERAL MAINTENANCE SPECIFICATIONS and CELESTIAL COORDINATES pages 36 39 and 46 51 LATITUDE CHARTS page 57 and BASIC ASTRONOMY pages 63 64 may also be useful Note that SLEW SPEEDS page 16 refers to Autostar functions only Slew speed functions of the Electronic Controller are covered in this appendix The following numbers refer to Fig 49 above Arrow Keys Press one of the four Arrow keys to slew the telescope i e up down left and right at any one of four slew speeds see SPEED KEY below Important Note If you reverse directions while using the Arrow keys to slew to objects there may be a slight pause as the telescope motors com pensate for the reversal of the internal gears Indicator Lights The four red LED Light Emitting Diode lights indicate the cur rent slew speed of the telescope Note For purposes of this manual the lights are identified as 1 through 4 with 1 being the top light and 4 being the bottom light SPEED Key Press SPEED to change the speed at which the telescope slews to an object Each press of the SPEED key changes the slew speed to the next slow er setting If the controller is already on the slowest slew speed light 4 pres
39. Event M rili uuu iter eec ter dese eid 27 Glossary Menu sesesseeeeseeneeneeerennenennnns 27 Utilities Meri rerit tr Fer inerte 27 Setup MENU u a a oc ceret e di net 28 Useful Autostar Features u a 32 Adding Observing Sites 32 Using Autostar to Find Objects Not in the Libraries 33 Observing Satellites 34 Landmarks ecrit nce ciet lee eene 34 To Check on Available Memory 35 Photography iet treni i eerte ini 36 Optional Accessories 37 Maintenance and Collimation 40 Specifications sse 46 Appendix A Celestial Coordinates 50 Locating the Celestial Pole 51 One And Two Star Polar Alignment 51 Appendix B Enhancing Pointing Precision 52 The Polar Alignment Viewfinder 52 Three Star Alignment Method 1 52 Axis Alignment Method 2 53 Axis Alignment Method 3 55 Smart Drive Training PEC Method 4 56 Appendix C Latitude Chart 57 Appendix D EC Handbox sse 58 Appendix E Mounting the Model SC
40. Instruction Manual LXD 75 Series Telescopes MEADE COM MEADE e WARNING Never use a Meade LXD75 Series Telescope to look at the Sun Looking at or near the Sun will cause instant and irre versible damage to your eye Eye damage is often painless so there is no warning to the observer that damage has occurred until it is too late Do not point the telescope or its viewfinder at or near the Sun Do not look through the telescope or its viewfinder as it is moving Children should always have adult supervision while observing CAUTION Use care to install batteries in the orientation indicated by the illustration in the battery slots of the battery holder Follow battery manufacturers precautions Do not install batteries backwards or mix new and used batteries Do not mix battery types If these precautions are not followed batteries may explode catch fire or leak Improperly installed batteries void your Meade warranty The name Meade Autostar and the Meade logo are trademarks registered with the U S Patent Office and in principal countries throughout the world LXD75 Autostar Suite and LPI are trademarks of Meade Instruments Corporation Patents US 6 304 376 US 6 392 799 US 6 563 636 D 422 610 Patent Pending 2004 Meade Instruments Corporation CONTENTS Telescope Features s 4 Autostar Features a 9 Getting Started noci terrere p
41. The Lunar Planetary Imager Photography through an LXD75 Schmidt Newtonian and Newtonian Reflector telescope requires an LXD75 Series T Adapter supplied attached to the telescope Fig 22a Through the telescope photography is possible with any 35mm camera body with a removable lens In this way the telescope effectively becomes the lens of the camera Unthread the focuser extension tube Fig 22b from the focuser drawtube to remove from the focuser assembly The T Adapter 2 Fig 22a threads onto the focuser fol lowed by the camera body 1 Fig 22a To orient an object in the viewfinder of the 35mm camera body use a small jeweler s screwdriver to slightly loosen three adjustment screws around the outer knurled ring of the T Adapter Rotate the camera body to achieve proper orientation of the object then re tighten the adjustment screws Photography through a long lens such as the LXD75 Series requires special technique for good results and the photographer should probably expect to waste a roll or two of film in acquiring this technique Long lens photography has its own rewards how ever rewards that short focus lenses cannot duplicate A few tips on photography with the LXD75 Series telescopes 1 Usea cable operated shutter release Touching the camera body to initiate shut ter operation almost certainly introduces undesirable vibrations 2 Focusthe image with extreme care While observing the subject through the cam era
42. Topics How is a star born How does a solar system form How is the distance to a star measured What is a light year What is red shift and blue shift How are the craters on our Moon formed Is there water under the surface of the Moon What is a black hole A neutron star A gamma burster An Einstein lens What are stars made of Why are stars different colors How is the elemental composition of a star determined What is an Lyman Alpha forest What is the difference between a Type 1 and a Type II supernova What is the importance of studying the composition of comets Where do comets come from How old is our Sun Will our Sun evolve into a planetary nebula or go super nova Whatis the Inflationary Big Bang What is dark matter What are MACHO s How are extrasolar planets discovered What is an accretion or protoplane tary disk What are the differences between elliptical spiral and irregular galaxies Can globular clusters be older than the universe itself Books The Guide to Amateur Astronomy by Jack Newton and Philip Teece The Sky A User s Guide by David Levy Turn Left at Orion by Guy Consolmagno amp Dan Davis Astrophotography for the Amateur by Michael Covington Observing for the Fun of It by Melanie Melton Will Black Holes Devour the Universe and 100 Other Questions about Astronomy by Melanie Melton Magazines 1 Sky amp Telescope Box 9111 Belmont MA 02178 2 Astronomy Box 1612 Waukesha
43. XD75 telescope Autostar and PC into even more powerful astronomical instrument LPI Lunar Planetary Imager Fig 23 combines the power of an electronic astronomical imager with the simplicity of a web cam Achieve great results the first time out on the Moon planets brighter deep sky objects and terrestrial targets Easy to use with real time display of object on your PC screen Just center focus and shoot Magic Eye software assisted focusing The Autostar Suite Software includes powerful tools to help you get the most from your Meade LXD telescope Sophisticated planetarium program with over 19 million objects Select objects from the 19 million objects in the planetarium display and the telescope slews to those objects Create your own Guided Tours A wide assortment of professional Meade accessories is available for the LXD75 Series telescope models The premium quality of these accessories is well suited to the qual ity of the instrument itself Consult the Meade General Catalog for complete details on these and other accessories 6 f 5 8 4 10 f 4 Eyepiece Apparent Field Power Actual Field Power ActualField Power Actual Field Super Pl ssl Eyepieces 4 elements 1 25 O D 6 4mm 52 119 0 44 127 0 41 159 0 33 9 7mm 52 79 0 66 84 0 62 105 0 50 12 4mm 52 61 0 85 65 0 79 82 0 63 15mm 52 51 1 02 54 1 96 68 0 77 20mm 52 38 1 36 41 1 28 51 1 02 26mm
44. aphic lens cleaner c Organic materials e g fingerprints on the front lens may be removed with a solution of 3 parts distilled water to 1 part isopropyl alcohol You may also add 1 drop of biodegradable dishwashing soap per pint of solution Use soft white facial tissues and make short gentle strokes Change tissues often Caution Do not use scented or lotioned tissues or damage could result to the optics d Do not for any reason remove the correcting plate from its machined hous ing for cleaning or other purposes You will almost certainly not be able to replace the corrector in its proper rotational orientation and serious degra dation of optical performance will result Meade Instruments assumes no liability for damage incurred to the telescope in this way e If the LXD75 is used outdoors on a humid night water condensation on the tele scope surfaces will probably result While such condensation does not normally cause any damage to the telescope it is recommended that the entire telescope be wiped down with a dry cloth before the telescope is packed away Do not how ever wipe any of the optical surfaces Rather simply allow the telescope to sit for some time in the warm indoor air so that the wet optical surfaces can dry unat tended f If your LXD75 is not to be used for an extended period perhaps for one month or more it is advisable to remove the batteries from the telescope Batteries left in the telescope for pr
45. approximately 1 8 in each direction Note that these offsets have been performed at the factory prior to Focuser drawtube Diagonal mirror Reflection of primary Tip mirror A useful tool for making collimation easier is to make a hole in the plastic cap that comes with the eyepiece to protect it during shipping Use a drill to make a 1 8 hole in the center of the cap and place it over the eye piece holder for use during the collimation procedure o 000 Reflection of secondary mirror darkened due to back lighting e Primary mirror clips O Reflection of observer s eye Fig 31a The view you will see while collimating a Schmidt Newtonian telescope shipment of your telescope It is only necessary for you to confirm that the telescope has not been badly jarred out of collimation and to perform the final fine tuning of Step 4 below Fig 31a shows a correctly collimated Schmidt Newtonian telescope as it appears when viewed through the focuser with the eyepiece removed To check and if necessary set the optical collimation follow these steps 1 Observe through the focuser and orient your body so that the telescope s primary mirror is to your right and the correcting plate end of the telescope tube is to your left The diagonal mirror will appear centered as shown 2 Fig 31a If the diagonal appears off center then adjust the 4 collimation screws on the plastic diagonal mirror housi
46. ar s menu levels Press MODE 3 Fig 2 to move back toward the top menu level Press the Scroll keys 7 Fig 2 to move up and down through the options or lists Press the Arrow keys 5 Fig 2 to move the cursor across the display Press the Help key 8 Fig 2 to access on line help LXD75 TIPS Look into the Future The Autostar Date option in the Setup menu is much more than just an entry of today s date with it you can look far into the future or learn about past events Autostar can calculate the date and times of future events and except for eclipses past events as well based on the current calendar system E g a Sunrise on March 6 2043 A D or the Vernal Equinox in 1776 A D To use this feature enter the desired date in the Setup Date menu and select an option in the Event menu Autostar can calculate dates and times for Sunrises Sunsets Moonrises Moonsets Moonphases Solar and Lunar Eclipses for the next 100 years meteor showers equinoxes and solstices and the minimums of Algol One very practical use of the Date and Time menus is to use the Sunset option to determine when you can begin your astronomical observing on any given evening eunjnas nueyy Jejsoiny ejej duio2 ay LZ bie jeseu Sonsueis peojumog euo 2 oju JAUME upa 1 l q ppv pases eus esana JeoruouoJsy s pe UOISI991d YBIH HO UO 93d eser3 Odd ayepdn 23d ured Odd AUG eus JOJO l SOV UIN uoleng y xe
47. ar then prompts you to enter the nearest city listed alphabetically to the observing site Use the Scroll keys to cycle through the database of cities Press ENTER when the correct city appears on the display Autostar then prompts you to enter the model number of your telescope Use the Scroll keys to cycle through the list of telescope models Press ENTER when the correct model appears on the display The display then reads Align Easy You now can use Autostar s Arrow keys to move the telescope to observe Note lf you go past the Align Easy or any other menu display you wish to select press MODE to return to the previous display s Press the Arrow keys 5 Fig 2 to move the telescope up down right or left You can move the telescope at different speeds Slew Speeds Autostar Models Only Autostar has nine slew speeds that move the optical tube at rates that are directly pro portional to the sidereal rate and have been calculated to accomplish specific func tions Press a Number key 6 Fig 2 to change the slew speed which is shown for about two seconds on Autostar s display The nine available speeds are Number Key 1 Number Key2 2x Guide 0 25 arc min sec or 0 004 sec 2 x sidereal 0 5 arc min sec or 0 008 sec Number Key3 8x 8 x sidereal 2 arc min sec or 0 033 sec Number Key 4 16x 16 x sidereal 4 arc min sec or 0 067 sec Number Key 5 64x 64 x sidereal 16 arc min sec or 0 27
48. at the tripod leg below the Fine Azimuth Control Knobs 27 Fig 1c approx imately faces North or South in the Southern Hemisphere Retighten the Dec Lock Move the counterweight shaft and mount so that it is parallel to the horizon This is position A See Fig 45 Retighten the R A Lock 3 If using a Schmidt Newtonian model rotate the optical tube you will need to loosen the cradle ring lock knobs 13 Fig 1a to do so to make sure the focuser extends horizontally from the optical tube while in position A and do not rotate the tube for the remainder of the alignment procedure If using a refractor model use the diagonal assembly to rotate the eyepiece during testing However be careful that the diagonal is placed flush against the focuser and tightened in place using the thumbscrews It is important that the diagonal does not slip during the procedure 4 Adjust the tripod legs polar axis altitude and or polar axis azimuth so that the wide horizontal object you have chosen as a target is positioned across the mid dle of the eyepiece at cl x 4 Procedure 1 Step 4 Step 5 Fig 45 Position A Fig 46 Position B Fig 47 Cradle adjustment screws Important Note The image will appear right side up but reversed left for right in the eyepiece of a refractor telescope The image will appear upside down but correct left for right in the eyepiece of a Schmidt Newtonian telescop
49. at your viewing location SETUP MENU Easy alignment permits all telescope operations with only a quick setup Select Item UTILITIES MENU Calculate eyepiece magnifications set timer alerts create your own landmark survey Select Item Utilities GLOSSARY What is an elliptical galaxy How far away is the Sun Expand your knowledge of astronomy by displaying terms and definitions and other information Select Item Object Select Item Glossar Object Event Guided Tours Glossary Utilities Setup Fig 19 Menus set in a loop Setup Align Date Time Daylight Saving Telescope Targets I etc Fig 20 Menu options dis play on the second line Use the Scroll keys to move up or down through the list of options Press ENTER to select the desired option Fig 18 The Autostar Universe The six primary categories listed in the Select Item menu of Autostar It is important to understand that menu selections are set in a loop Fig 19 This means that pressing the Scroll Down key 7 Fig 2 cycles down through all the available options within a given category then returns to the first option The Scroll Up key 7 Fig 2 cycles up through the options in the opposite order Note that this capability is a quick way to get to an option that is near the bottom of the list The following example demon strates this capability
50. cking rates Reverse L R Reverses the functions of the Left and Right Arrow keys i e the Right key moves the telescope to the left Reverse U D Reverses the functions of the Up and Down Arrow keys i e the Up key moves the telescope down Quiet Slew Sets the maximum slew rate to 1 5 for quieter operation Max Elevation Allows you to enter a value in degrees that sets a limit as to how far the optical tube can swing upward during a programmed slew Note that it does not prevent you from performing a manual slew past this limit This is use ful when you have a camera or other peripheral attached to the telescope you can prevent it from striking the telescope base Min AOS Acquisition of Signal Allows you enter a value in degrees This value represents the altitude at which your telescope begins to slew when acquiring a satellite track This is useful when you are observing satellites but a tall tree or building is obstructing the telescope For example you might begin to track the satellite at 15 altitude instead of 5 See OBSERVING SATELLITES page 34 for more information about satellites Calibrate Motor If the telescope motors appear to have a problem use this option to retest the motors before performing a Reset This option is also used if an Autostar unit is moved between telescopes to match Autostar to the new tel escope To calibrate the motors select this option and press ENTER Smart Drive Allows you
51. counterclockwise unlocks the telescope enabling it to be freely rotated by hand about the R A axis Turning the R A lock clockwise to a firm feel only tightens the lock and prevents the telescope from being moved manually but engages the R A motor drive see for Autostar or EC handbox operation Dec Motor Drive Assembly Controlled by Autostar or the EC handbox Moves the optical tube along the Dec axis The Dec Lock see must be tightened to a firm feel in order for the Dec motor to operate T Handle Lock and Shaft Place the spreader bar see over the shaft and thread the shaft into the tripod mounting base mounting base see and tighten to a firm feel to secure the tray to the tripod and keep the tripod stable See HOW TO ASSEMBLE YOUR TELESCOPE page 11 for more information Spreader Bar Holds the tripod legs securely in place and also acts as a holder for extra eyepieces Tripod Mounting Base Set the telescope mount into the tripod mounting base and secure into place using the T handle lock and shaft See HOW TO ASSEMBLE YOUR TELESCOPE page 11 for more information Variable Height Tripod Legs 3 Supports the telescope mount The mount attaches to the top of the tripod Spreader Bar Tension Knob Tighten to secure the spreader bar see D against the tripod legs Tripod Leg Lock Knobs one on each leg Loosen these knobs to slide the inner leg extension Tighten the knobs to a firm feel to lock in the hei
52. critical for See the LXD75 TIPS box Autostar to properly calculate locations and events Time may be set to 24 hour mode page 24 military time by selecting the blank option i e no option is displayed which follows i the AM and PM options Daylight Saving is used to enable or disable Daylight Savings time Note Daylight Savings Time may be referred to by different names in vari ous areas of the world Check local time to verify Telescope accesses several options including m Telescope Model Allows you to select the telescope model connected to Autostar m Focal Length Displays the focal length of the selected telescope gm Az R A Ratio and Alt Dec Ratio The Az Azimuth or the R A Right Ascension ratio and Alt Altitude or Dec Declination ratio refers to the gears of the telescope s motors Do not alter these numbers gm AZ R A Percent This option allows you to change the AZ azimuth or R A right ascension backlash i e the way the Arrow keys move the telescope along the azimuth or R A axes If you enter a value near 100 the telescope tube responds more quickly it responds immediately at 100 as you hold down an Arrow key and also slews moves the tube more quickly If you enter a value near 0 it takes longer for the tube to respond as you hold down an Arrow key and also slews the tube more slowly Experiment with this option Try changing the percent value until you get a feel for the Arrow
53. ctronic Controllers available for Meade s ETX and DS telescope series are not compatible and will not operate with the LXD75 EC series models Do not plug in other telescope series EC handboxes into the LXD75 computer control panel nor plug the LXD75 EC series handboxes into any other telescope series computer control panel Light No Light Status Light 1 on Lot CC Blinking Light 4 Fig 50 Indicator Light Key The procedures in this manu al identify the status of the four indicator lights as depict ed above on blinking or off Fast Medium Moderate Fig 49 Electronic Controller 1 Arrow Keys 2 Indicator Lights 3 SPEED Key 4 Coil Cord 5 MODE Key 6 OUT Key 7 IN Key Some LXD75 models designated with an EC for example AR 5EC come equipped with an Electronic Controller EC handbox rather than the Autostar Handbox The Electronic Controller provides you with the means to control the telescope motors from a compact handbox The Electronic Controller Fig 49 has soft touch keys designed to have a positive feel even through gloves The primary functions of the Electronic Controller are to move slew the telescope to an object to set operation for the Northern or Southern Hemispheres and to indicate the slew speed Users of the EC models should follow the procedures described in GETTING STARTED BALANCING THE TELESCOP
54. current month is displayed use the Right Arrow 5 Fig 2 to move the cursor to the year c Use Number keys 6 Fig 2 to enter all four digits of the current year Use the Right Arrow key 5 Fig 2 to move the cursor from one number to the next d Press ENTER 2 Fig 2 when the entire date has been entered Autostar then prompts you to enter the current time Use the Number keys to enter digits The Right and Left Arrow keys move the cursor across the screen as described in the previous step Enter the current time use a 0 for the first digit if less than 10 Use the Up Arrow key 7 Fig 2 to scroll through AM PM or blank The blank option screen displays neither AM nor PM selects the 24 hour i e military time clock Then press ENTER to start the clock Autostar then prompts you to enter the status of Daylight Savings Time Press one of the Scroll keys to toggle between the YES NO settings Select the desired setting by pressing ENTER Note Daylight Savings Time may be referred to by a different name in various areas of the world If you have previously entered the Country State and City of your observing site as described in ACTIVATE THE ARROW KEYS page 16 go to step 9 If you have not entered this information perform the following steps 10 a Autostar prompts you to enter the Country or State listed alphabetically of the observing site Use the Scroll keys to cycle through the database of coun
55. d the optical tube so that it cannot accidentally swing freely Lock the R A lock 33 Fig 1d and unlock the Dec lock 17 Fig 1d The telescope now is able to move freely about the Dec axis Loosen the cradle ring lock knobs 13 Fig 1a so that the main tube slides easily back and forth in the cradle rings Move the main tube in the cradle rings until the telescope remains in one posi tion without tending to drift down in either direction Re lock the Dec lock 17 Fig 1d The telescope is now properly balanced on both axes Next the viewfinder must be aligned Aligning the Viewfinder The wide field of view of the telescope s viewfinder 4 Fig 1a provides an easier way to initially sight objects than the main telescope s eyepiece 3 Fig 1a which has a much narrower field of view If you have not already attached the viewfinder to the tel escope tube assembly follow the procedure described in step 9 page 12 In order for the viewfinder to be useful it must be aligned to the main telescope so that both the viewfinder and telescope s optical tube 10 Fig 1a point at the same position in the sky This alignment makes it easier to find objects First locate an object in the wide field viewfinder then look into the eyepiece of the main telescope for a detailed view To align the viewfinder perform steps 1 through 4 during the daytime perform step 5 at night Both the 6 x 30mm and the 8 x 50mm viewfinders align in an ide
56. dereal to 4 5 sec in 9 increments MIPOG rh s akaqa kuwa fee er Variable height field tripod ACCOSSOFIOS ueri tn 6 x 30mm finder 1 25 diagonal Super Pl ssl 26mm eyepiece 1 25 and 2 eyepiece holders Battery pack for 8 D cell batteries user supplied Autostar Controller Polar Finder Reticle Batteries Maxell LR41 or equivalent Net telescope weight 26 Ibs Net tripod weight 45 Ibs Autostar Specifications PIOC GSSOL 2 1 asla sls P EE E E d 68HC11 8MHz Flash Memory uuruuu usan cete er eee tee eee 1 0MB reloadable Keypad erp eta i ee 20 key alphanumeric Display uinea eet 2 line 16 character LCD Backlight 4 den ei ev A eet Red LED Utility Kighit n a einer Yes Coil Gord se ce eden cii anne 24 Database encor edes Peces Fe ane d LP 30 223 objects Autostar Dimensions Length aisha Reti ate da 6 56 16 6cm Width LCD end usu n ehar aias 3 19 80cm Width Connector end 2 25 57cm Depth ee ente pede e Pts 0 81 21cm Autostar net weight sess 1 12 Ibs 0 51kg Maxell is a trademark of Hitachi Maxell Ltd Inspecting the Optics A Note About the Flashlight Test If a flashlight or other high intensity light source is pointed down the main telescope tube the view depending upon the observer s line of sight and the angle of the lig
57. done so see SETTING THE POLAR HOME POSITION page 17 Select Align Easy from Autostar s menus LXD75 TIPS Which One s the Alignment Star If Autostar has chosen an alignment star with which you are unfamiliar how can you be sure if the star in your eyepiece is really the alignment star The rule of thumb is that an alignment star is usually the brightest star in that area of the sky If you perform a GO TO to an alignment star and you re not sure if you have located the alignment star or it isn t in the eyepiece look through your viewfinder When you view an alignment star in the viewfinder it stands out dra matically from the rest of the stars in that portion of the sky The viewfinder will help you locate a star more quickly than the eyepiece because it has a much wider field of view than the eyepiece Using Autostar set the slew speed to 6 or higher and use the Arrow keys to center the alignment star in the viewfinder If your viewfinder has been aligned with the telescope the alignment star should now be in the eyepiece Set the slew speed to 4 or less and center the star in the eyepiece Also see the Spiral Search tip on page 21 If you have an obstruction such as a tree or a building blocking your view of the alignment star or if you have any doubts at all about the star that has been cho sen no problem Just press the Scroll Down key and Autostar will find another star to align upon Tip When multiple choices are
58. e if the eyepiece extends horizontally from the tube as described in Step 3 Loosen the R A Lock Tip Make sure you do not accidentally loosen the Dec Lock If you do restart the procedure beginning at Step 2 Rotate the telescope 180 in the R A axis ONLY until the optical tube is in position B See Fig 46 Note the position of your target in the eyepiece Using the Autostar Up and Down Arrow keys ONLY move the optical tube in Dec axis until your target is HALFWAY back to the center of the eyepiece Rotate the telescope 180 in the R A axis ONLY to return the optical tube to posi tion A Verify that your target is in the same location in the eyepiece vertically as in the previous step that is it is not higher or lower or absent from the eyepiece Ignore side to side misalignment that is if it has moved to the right or left Repeat steps 6 and 7 if necessary alternating positions A and B until the hori zontal object is in the same vertical location in the eyepiece in both positions The Dec optical axis is now calibrated to be at 90 degrees For Procedure 2 DO NOT adjust the declination of the optical tube either manually or with the hand box Procedure 2 To correct for elevation misalignment After performing the attitude correction select an object that is at a very great distance at least a mile away to approximate infinity Ideally the object should be unique with several identifiable objects to the
59. e cradle ring locks knobs C and move the optical tube until the eyepiece D points downward as shown in the Fig 48 Re tighten the cradle ring locks If using a refractor model use the diagonal assembly to rotate the eyepiece to a convenient viewing angle during testing However be careful that the diag onal is placed flush against the focuser and tightened in place using the thumb Screws It is important that the diagonal does not slip during the procedure Make sure that both the R A and Dec locks 17 and 33 Fig 1d are tightened to a firm feel Turn on Autostar and go to Setup Telescope Press ENTER Press one of the Scroll keys until LXD 55 Adjust displays and then press ENTER A message displays that tells you to center a landmark If the landmark is not visible in your eyepiece lift and move the entire telescope and tripod assembly try not to move the tube too far from the horizontal position no more than 5 up or down as described in Step 2 You may also use the fine azimuth controls 27 Fig 1d for side to side movement and the Autostar Up Down Arrows for small adjustments to the declination axis Caution Before pressing ENTER step back from the telescope assembly as the telescope will begin to rotate about two axes When the landmark is centered Step 5 press ENTER The telescope first moves 180 on the Dec axis and then rotates 180 on the R A axis Autostar displays Slewing When the telesc
60. e previously unreach able for all but the most dedicated of amateur astronomers Autostar Suite with Meade LPI Lunar Planetary Imager and Planetarium software Fig 23 turns your Meade LXD75 telescope Autostar and PC into even more powerful and easy to use astronomical instruments See page 36 for more details To find out more about these and other accessories available for your telescope check out the Meade General Catalog or contact your local Meade dealer Note It is not necessary for the user to collimate the refractor models SC 8 Schmidt Cassegrain users see ALIGNMENT OF THE SCHMIDT CASSEGRAIN OPTICAL SYSTEM page 42 Newtonian Reflector users see ALIGNMENT OF THE NEWTONIAN REFLECTOR OPTICAL SYSTEM page 44 General Maintenance LXD75 Series telescopes are precision optical instruments designed to yield a lifetime of rewarding applications Given the care and respect due any precision instrument your LXD75 will rarely if ever require factory servicing Maintenance guidelines include a Avoid cleaning the telescope s optics A little dust on the front surface of the tele Scope s correcting lens causes virtually no degradation of image quality and should not be considered reason to clean the lens b When absolutely necessary dust on the front lens should be removed with gen tle strokes of a camel hair brush or blown off with an ear syringe available at any pharmacy DO NOT use a commercial photogr
61. ected the magnification is calculated gm Suggest Autostar calculates and suggests the best eyepiece for viewing based on the telescope and the object being viewed Display Options enables or disables Autostar s two initial displays If both displays are disabled Autostar begins with the Date display gm Sun Warning Turns the Sun Warning message on or off W Getting Started Turns the Getting Started message on or off Brightness Adj Adjusts the brightness of the display using the Scroll keys When com plete press ENTER Contrast Adj Adjusts the contrast of the display using the Scroll keys When complete press ENTER The Contrast Adjustment feature is usually only required in very cold weather Beep Turns the beep on or off Landmark Survey automatically slews the telescope to all user defined landmarks with a short pause at each location Press ENTER to start the survey While a slew is in progress press any key to skip that object and go to the next landmark on the list To observe a landmark for a longer period press MODE when paused on the object to stop the survey Press ENTER to restart the survey at the first object on the list Sleep Scope is a power saving option that shuts down Autostar and the telescope without forgetting its alignment With Sleep Scope selected press ENTER to acti vate the Sleep function Autostar goes dark but the internal clock keeps running Press any key except ENTER to re acti
62. ed Note If the scheduled appearance position of the satellite is obstructed i e by a building tree or hill press ENTER and Autostar starts to move the telescope along the expected satellite track When the track clears the obstruction press ENTER again to pause the telescope then continue with this procedure 9 With about 20 seconds left on the countdown timer start watching through the tel escope viewfinder for the satellite to enter the field of view 10 When the satellite enters the viewfinder field of view press ENTER The tele Scope starts to track with the satellite 11 Use the Autostar Arrow keys to center the object in the viewfinder then look through the eyepiece to view the object Satellite orbits change and new satellites including the Space Shuttle are launched Visit the Meade website www meade com approximately once a month to get updated information and instructions on how to download this data to Autostar If orbital parameters are more than one month old the satellite pass may not happen at the time predicted by Autostar Downloading requires the optional 505 AstroFinder Software and Cable Connector Kit See OPTIONAL ACCESSORIES page 38 Note Satellite observing is an exciting challenge Most satellites are in low orbit travelling at approximately 17 500 mph When visible they move quickly across the sky and are only in the field of view for a few minutes requiring Autostar to slew the telesco
63. ee page 34 for more information You ll find our website at http www meade com Here are some other sites you might find interesting Sky amp Telescope http www SkyandTelescope com Astronomy http www astronomy com The Starfield http users nac net gburke Astronomy Picture of the Day http antwrp gsfc nasa goc apod Heavens Above satellite observing information http www heavens above com Photographic Atlas of the Moon http www Ipi ursa edu research lunar_orbiter Hubble Space Telescope Public Pictures http oposite stsci edu pubinfo pictures html Time Zone Atlantic Eastern Central Mountain Pacific Alaska Hawaii Shift 4 Hours 5 Hours 6 Hours 7 Hours 8 Hours 9 Hours 10 Hours Table 1 Time Zone Shift Before trying out the examples in this section familiarize yourself with the basic oper ations of Autostar described earlier in this manual The following examples assume that you have a basic knowledge of Autostar and understand how to scroll to a desired menu or menu option and how to enter numbers and text It also assumes that you have initialized and aligned your telescope Adding Observing Sites If you plan to observe using Autostar at different geographic locations you can store up to six observation sites in Autostar s memory to help simplify your telescope setup Perform these procedures using the Site options Add Select Delete Edit of the Setup menu To
64. em Object displays b Press the Scroll Up key 7 Fig 2 once Select Item Setup displays c Press ENTER 2 Fig 2 Setup Align displays Go to Step 3 Press MODE 3 Fig 2 Setup Align displays Press the Scroll Down key repeatedly until Setup Targets displays Press ENTER 2 Fig 2 Targets Terrestrial displays Press one of the Scroll keys once 7 Fig 2 Targets Astronomical now displays Use the Arrow keys 5 Fig 2 to locate a bright star in the night sky Use the viewfinder to help line up on the star You may choose any unobstructed bright star for the purposes of this example Use Autostar s Arrow keys to center the star in the eyepiece Once the star is centered press ENTER to select Astronomical The telescope s tracking motors then engage It may take the tracking motors several seconds to begin tracking When they do it may be necessary to once again center the star in the eyepiece The tracking motors will then keep any star you choose in the center of the eyepiece Press and hold the ENTER key for a few seconds and then release to stop track ing You may also stop tracking by choosing Terrestrial in the Targets menu Using Autostar s GO TO Capabilities Autostar Models Only Before you can use Autostar s GO TO capabilities you must first Learn how Autostar s keys move through the menus Initialize Autostar Place the telescope in the polar home position if you have not already
65. enu is displayed Press ENTER to select this menu 2 Scroll through the Object menu options until the Object Identify screen appears 3 Press ENTER Autostar searches the libraries for the identity of the object being observed 4 If the telescope is not directly on an Autostar library object the nearest library object is located and displayed on the screen Press GO TO and the telescope slews to that object Want to learn more about using the Date menu See the LXD75 TIPS box page 24 WARNING NS Never use a Meade9 LXD75 Series Telescope to look at the Sun Looking at or near the Sun will cause instant and irreversible damage to your eye Eye damage is often painless so there is no warning to the observer that dam age has occurred until it is too late Do not point the tele scope or its viewfind er at or near the Sun Do not look through the telescope or its viewfinder as it is moving Children should always have adult supervision while observing Browse allows you to search the library for objects with certain parameters much like a search engine Edit Parameters lets you set various parameters for the search such as Object Type Minimum Elevation Largest etc Once you have set the param eters of the search select Start Search and press ENTER Autostar will display the results of the search Event Menu The Event menu provides access to dates and times of astronomical events The
66. epend upon what has previously has been set 4 Press SPEED once This changes the system to polar mode for the Earth s Southern Hemisphere with the motor drive set to operate at the sidereal rate 5 Press SPEED a second time This changes the system to polar mode for the Earth s Northern hemisphere with the motor drive set to operate at the sidereal rate 6 Press SPEED a third time to disable tracking 7 Use the SPEED key as described in the above steps to cycle among these three modes Southern Hemisphere polar Northern Hemisphere polar or Tracking Disabled until the desired mode is shown by the appropriate light configuration 8 Press and hold MODE until just one light is on This exits the Mode function If you choose Northern or Southern Hemisphere polar mode the motor drive starts operating at the sidereal rate 9 Use the four Arrow keys to slew the telescope to the desired object To change the slew speed press SPEED Optional Autostar Computer Controller for LXD75 EC Users One of the most important advances in telescope control in the past 25 years the Meade Autostar Computer Controller turns your LXD75 EC model into an automatic celestial object locating system Just plug Autostar into the telescope s HBX port in place of the standard equipment Electronic Controller do a quick telescope align ment and you are ready to observe any object in the Autostar s 30 000 object data base Best of all the Meade Autostar i
67. er a wide field of view bright high contrast images and eye relief during long observing sessions To find an object with a telescope always start with a lower power eyepiece such as the Super Pl ssl 26mm When the object is located and centered in the eyepiece you may wish to switch to a higher power eye piece to enlarge the image as much as practical for prevailing seeing conditions For information about optional eyepieces for the LXD75 Series models see OPTIONAL ACCESSORIES page 37 The power or magnification of a telescope is determined by the focal length of the tel escope and the focal length of the eyepiece being used To calculate eyepiece power divide the telescope s focal length by the eyepiece s focal length For example a 26mm eyepiece is supplied with the LXD75 Series The focal length of the 8 LXD75 Series model is 812mm see SPECIFICATIONS page 46 Telescope Focal Length Eyepiece Focal Length Magnification Power Telescope Focal Length 812mm Eyepiece Focal Length 26mm 812 26 31 The eyepiece power or magnification is therefore 31X approximately Observing by Moving the Telescope Manually After the telescope is assembled and balanced as described previously you are ready to begin manual observations View easy to find terrestrial objects such as street signs or traffic lights to become accustomed to the functions and operations of the tel escope For the best results during observations follow the sug
68. ere 11 Unpacking and Assembly 11 How to Assemble Your Telescope 11 Balancing the Telescope a 13 Aligning the Viewfinder 14 Choosing an Eyepiece 14 Observing By Moving the Telescope Manually 15 Activate the Arrow Keys a 16 Slew Speeds esee 16 Observe the Moon 17 Tracking Objects 17 Setting the Polar Home Position 17 Observe a Star Using Automatic Tracking 18 Using Autostar s GO TO Capabilities 18 Moving Through Autostar s Menus 19 Initializing Autostar 19 Training the Drive 20 Easy Alignment u u 21 30 TO Saturn 5 ei n ete SG uka ia 21 Using the Guided Tour 22 Basic Autostar Operation esses 23 Autostar Navigation Exercise 23 Entering Data into Autostar 24 Navigating Autostar eeee 24 Autostar s Menus Ain tene beet 25 Object Men u u direc e Pre ee acini 26
69. erving location See APPENDIX C LATITUDE CHART page 57 for a list of latitudes or check an atlas Move the latitude T han dle screws in order to move the mount until the pointer points to your latitude The two T handle screws work in a push pull operation as you tighten one loosen the other When the pointer points at your latitude tighten both screws until they make contact with the mount At your observing site set up the telescope assembly so that the tripod leg below the Fine Azimuth Control Knobs 27 Fig 1c approximately faces North or South in the Southern Hemisphere Model SC 8 users see APPENDIX E page 62 Attach the cradle assembly to the mount Remove the optical tube from the cradle and slide the cradle assembly 11 Fig 1a onto the cradle mounting slot See Fig 7 The rounded base of the cradle assembly fits into the rounded por tion of the mounting slot Tighten both the cradle locking knob and the secondary locking knob to a firm feel Position optical tube Unscrew the cradle ring lock knobs 13 Fig 1a and open the cradle rings While firmly holding the optical tube 10 Fig 1a position it onto the cradle rings 14 Fig 1a with the mid point of the optical tube s length lying roughly in the center of the cradle ring assembly Point the tube so that the front end this end comes shipped with the dust cover 9 Fig 1a over it is oriented as depicted in Fig 1a Then close the cradle rings 14 Fig
70. eyepieces avail able for your telescope see OPTIONAL ACCESSORIES page 37 Once centered an object can be focused by turning one of the knobs of the focusing mechanism 8 Fig 1b Notice that when observing astronomical objects the field of view begins to slowly drift across the eyepiece field This motion is caused by the rotation of the Earth on its axis Objects appear to move through the field more rapidly at higher powers See TRACKING OBJECTS page 17 for detailed information on how you can counteract the drift in the field of view Activate the Arrow Keys Autostar Models Only Autostar s Arrow keys allow you to slew move the telescope up down right or left The following procedure describes how to activate Autostar s Arrow keys 1 After the batteries are installed and Autostar s cord is plugged into the HBX port of computer control panel A Fig 1e a copyright message lights on the Autostar LCD display 1 Fig 2 A message warning not to look at the Sun scrolls across the display Press the key prompted by Autostar to acknowledge that the Sun warning has been read and understood Press ENTER 2 Fig 2 repeatedly until Country State appears on the display Ignore the prompts requesting Date and Time See INITIALIZING AUTOSTAR page 19 for more information Use the Scroll keys 7 Fig 2 to cycle through the database of countries states and provinces Press ENTER when the correct location displays Autost
71. fications which the telescope s aperture and atmospheric conditions cannot reasonably support Keep in mind that a smaller but bright and well resolved image is far superior to one that is larger but dim and poorly resolved see Figs 15a and 15b Powers Fig 15a amp 15b Jupiter examples of the right amount of magnification and too much magnification above 400X should be employed only under the steadiest atmospheric condi tions Autostar can calculate the best eyepiece for you to use Try out the Eyepiece Calc feature in the Utilities menu Most observers should have three or four additional eyepieces to achieve the full range of reasonable magnifications possible with the LXD75 Series telescopes See OPTIONAL ACCESSORIES page 37 Note Autostar only prompts you to enter Country or State and City as described in steps 3 4 and 5 the first time it is activated These prompts do not appear again unless you reset Autostar see RESET page 31 However if you need to re enter this information e g you change your geographic location you can change the location information by using the Site option of the Setup menu See ADDING OBSERVING SITES page 32 for detailed informa tion supplied with your telescope When the object is centered and focused in the eye piece switch to a higher power eyepiece to enlarge the image as much as practi cal for prevailing viewing conditions For information about other
72. from the eyepiece holder on the focuser assembly Set the dust cap aside in a safe place and replace it when you have finished observ ing to protect the eyepiece assembly Back off the eyepiece thumbscrews 1 Fig 1a and insert the supplied SP 26mm eyepiece 3 Fig 1a into the the eyepiece holder Tighten the holder thumbscrews to a firm feel to secure the eyepiece Insert the eyepiece Achromatic refractor and Schmidt Cassegrain models Fig 10b Lift to remove the dust cap from the eyepiece holder on the focuser assembly Set the dust cap aside in a safe place and replace it when you have finished observing to protect the eyepiece assembly Back off the eyepiece thumbscrews 1 Fig 1b and slide the diagonal into the holder and tighten the thumbscrews to a firm feel only Insert the supplied SP 26mm eyepiece 3 Fig Thumbscrew Eyepiece Holder Fig 10a Insert eyepiece into holder and tighten thumbscrews Eyepiece Thumbscrews Diagonal Fig 10b Insert eyepiece into diagonal and tighten thumbscrews Fig 11 Adjust the tripod height using the leg lock knobs Fig 12 Battery holder Reticle LED Fig 13 Reticle assembly 11 12 13 14 1b into the the diagonal Tighten the diagonal s thumbscrews to a firm feel to secure the eyepiece Note Two eyepiece holders are included with your telescope for both 1 25 and 2 eyepieces To change
73. g The telescope is now in the Northern Hemisphere polar mode 3 Press IN 7 Fig 49 and light 4 comes on steady The tracking rate is now 0 5 faster than sidereal If the object you re tracking is moving faster than the sidere al rate look through the eyepiece and press IN Each time you press IN the track ing rate increases by 0 5 Note that when the Mode function is active the tracking motor stops To restart the tracking motor press MODE again Experiment with this function to get the right speed Press IN to set the tracking rate Then press MODE and look through the eyepiece Continue pressing IN and MODE until the object remains centered with little or no drifting in the eyepiece Note The tracking rate can be increased by up to 65 4 To use arate slower than sidereal press OUT 6 Fig 49 until light 4 blinks again sidereal rate Press OUT again and light 4 goes out signifying a tracking rate 0 5 slower than sidereal Note that when the Mode function is active the tracking motor stops To restart the tracking motor press MODE again Experiment with this function to get the right speed Press OUT to set the track ing rate Then press MODE and look through the eyepiece Continue pressing OUT and MODE until the object remains centered with little or no drifting in the eyepiece Note The tracking rate can be decreased by up to 65 5 Press and hold MODE until only a single light is on This exits the Mode function If N
74. g the cradle screws a little and verify that the correct direction was moved through the eyepiece WITHOUT moving the declination axis from its position determined in the previ ous alignment and WITHOUT adjusting the cradle position further adjust the legs latitude and azimuth of the tripod to center the object in the eyepiece again Motor at back of Fig 48 Method 2 Setup A Optical Tube B Dec Motor C Cradle Ring Lock Knobs D Eyepiece Rotate the telescope 180 in the R A axis ONLY to return the optical tube to posi tion A Repeat steps 5 through 8 if necessary alternating between position A and posi tion B and bringing the reference object halfway of the remaining distance to cen ter Stop the procedure once the distance between the object in position A and position B is less than one third the width of the eyepiece As a final check select another object and place it into the center of the eyepiece Rotate the mount about the R A axis Watch the motion of that object It is accept able if it moves slightly but should remain in the eyepiece the entire time Tips When moving to position A or B it is usually sufficient to merely level the Dec axis by eye Whether in position A or B the counterweight shaft should appear to be horizontal when looked at from several feet away If you are finding it difficult to lower the altitude of the tripod head without the counterweight banging into
75. gestions below m When you wish to locate an object to observe first loosen the telescope s R A lock 33 Fig 1d and Dec lock 17 Fig 1d The telescope can now turn freely on its axes Unlock each axis separately and practice moving your telescope Then practice with two unlocked axes at the same time It is very important to practice this step to understand how your telescope moves as the movement of an equatorial mount is not intuitive g Use the aligned viewfinder to sight in on the object you wish to observe When the object is centered in the viewfinder s crosshairs re tighten the R A and Dec locks BW AA telescope s eyepiece magnifies the image formed by the telescope s main optics Each eyepiece has a focal length expressed in millimeters or mm The smaller the focal length the higher the magnification For example an eyepiece with a focal length of 9mm has a higher magnification than an eyepiece with a focal length of 26mm Low power magnification eyepieces offer a wide field of view bright high contrast images and relief of eye strain during long observing sessions To observe an object with a telescope always start with a low power eyepiece such as the SP 26mm LXD75 TIPS Too Much Power Can you ever have too much power If the type of power you re referring to is eyepiece magnification yes you can The most common mistake of the begin ning observer is to overpower a telescope by using high magni
76. ght of the tripod Battery Pack and holder see Fig 1f Plug into the 12v DC power connector B Fig 1e of the computer control panel Insert 8 user supplied D cell batteries to power motor drives and Autostar handbox LXD75 TIPS Join an Astronomy Club Attend a Star Party One of the best ways to increase your knowledge of astronomy is to join an astronomy club Check your local newspaper school library or telescope dealer store to find out if there s a club in your area At club meetings you will meet other astronomy and Meade enthusiasts with whom you will be able to share your discoveries Clubs are an excellent way to learn more about observing the sky to find out where the best observing sites are and to compare notes about telescopes eyepieces filters tripods and so forth Often club members are excellent astrophotographers Not only will you be able to see examples of their art but you may even be able to pick up some tricks of the trade to try out on your LXD75 Series telescope See page 36 for more information about photog raphy with the LXD75 Series Many groups also hold regularly scheduled Star Parties at which you can check out and observe with many different telescopes and other pieces of astronomical equipment Magazines such as Sky amp Telescope and Astronomy print schedules for many popular Star Parties around the United States and Canada Important Note The model SN 6EC model SN 8EC
77. gned to prevent the focuser drawtube from moving when a heavy accessory such as a camera is attached to the focuser assembly For normal observing with an eyepiece and diagonal it is not necessary to use the lock knob Declination Dec Controls the manual movement of the telescope Turning the Dec lock counterclockwise unlocks the telescope enabling it to be freely rotated by hand about the Dec axis Turning the Dec lock clockwise to a firm feel only tightens the lock and prevents the telescope from being moved manually but engages the Dec motor drive see for Autostar operation Polar Viewfinder Cap Remove this cap when using the polar viewfinder see 65 Dec Setting Circle See APPENDIX A page 50 for more information Counterweight Shaft Base Thread along with the shaft to the mount See page 11 for more information Counterweight and Counterweight Lock Knob Counterbalances the weight of the optical tube and adds stability to the mount Tighten the lock knob on the side of the counterweight to a firm feel to prevent the weight from sliding on the shaft Counterweight Shaft Slide the counterweight onto this shaft see Counterweight Safety Cap Prevents the counterweight from accidentally slip ping off the end of the counterweight shaft Computer Control Panel see Fig 1e A Handbox HBX Port Plug the Autostar or EC handbox coil cord 10 Fig 2 into this port B 12v DC Power Connector Plug the batte
78. haft until the telescope remains in one position without tending to drift down in either direction Then re tighten the counterweight lock knob locking the counterweight in position Collimation Screws Viewfinder Eyepiece Fig 14a Viewfinder assembly refractor and Schmidt Newtonian mod Viewfinder Eyepiece Collimation Screws e Viewfinder amp Bracket Fig 14b Viewfinder assembly Newtonian models Important Note Objects appear upside down and reversed left for right when observed in the viewfinder With refracting telescope models objects viewed through the main telescope with the diagonal mirror in place are seen right side up but reversed left for right This image inversion is of no consequence when observ ing astronomical objects and in fact all astronomical telescopes yield inverted images During terrestrial observing where a fully correctly orient ed image right side up and correct left for right is desir able an optional Meade 928 45 Erect Image Diagonal Prism is available See OPTIONAL ACCES SORIES page 38 Note that for Schmidt Newtonian models no means of image inversion is available while these tele scopes may be used for ter restrial observing the image will not be correctly oriented in either right side up or left for right orientations 3 Achromatic refractor Schmidt Newtonian models and Newtonian models Again hol
79. has been abused or mishandled where unauthorized repairs have been attempted or performed or where depreciation of the product is due to normal wear and tear Meade specifically disclaims special indirect or consequential damages or lost profit which may result from a breach of this warranty Any implied warranties which cannot be disclaimed are hereby limited to a term of one year from the date of original retail purchase This warranty gives you specific rights You may have other rights which vary from state to state Meade reserves the right to change product specifications or to discontinue products without notice 592225922522 2592959292592959295929592 9592959295929 92 909299 9299 9292 9 2 9 2 9 29 29 2 Q O OOO COCCO V V AV CCC 4474474747 47477 CCC CO COCO CC MEADE 6001 Oak Canyon Irvine California 92618 14 7500 01 2 05C 949 451 1450 E www meade com
80. he lati tude of an observing site not listed on the chart locate the city closest to your site Then follow the procedure below Northern hemisphere observers N If the site is over 70 miles 110 km north of the listed city add one degree for every 70 miles If the site is over 70 miles South of the listed city subtract one degree per 70 miles Southern Hemisphere observers S If the site is over 70 miles 110 km north of the listed city subtract one degree for every 70 miles If the site is over 70 miles South of the listed city add one degree per 70 miles NORTH AMERICA City State Prov Country Latitude Albuquerque New Mexico 35 N Anchorage Alaska 61 N Atlanta Georgia 34 N Boston Massachusetts 42 N Calgary Alberta 51 N Chicago Illinois 42 N Cleveland Ohio 41 N Dallas Texas 33 N Denver Colorado 40 N Detroit Michigan 42 N Honolulu Hawaii 21 N Jackson Mississippi 32 N Kansas City Missouri 39 N Kenosha Wisconsin 45 N Las Vegas Nevada 36 N Little Rock Arkansas 35 N Los Angeles California 34 N Mexico City Mexico 19 N Miami Florida 26 N Minneapolis Minnesota 45 N Nashville Tennessee 36 N New Orleans Louisiana 30 N New York New York 41 N Oklahoma City Oklahoma 35 N Ottawa Ontario 45 N Philadelphia Pennsylvania 40 N Phoenix Arizona 33 N Portland Oregon 46 N Salt Lake City Utah 41 N San Antonio Texas 29 N San Diego California 33 N San Francisco Californ
81. he plastic strip before using Refer to the reticle assembly in Fig 13b and note the orientation of the batteries Place the batteries C into the battery holder D before inserting into the reticle container A Note Remember to turn off the LED when you are not using the reticle Plug in Autostar or EC Handbox Plug the Autostar or EC handbox cable into the HBX port A Fig 1e Balancing the Telescope In order for the telescope to be stable on the tripod and also for it to move smoothly it must be balanced To balance the telescope unlock the Right Ascension or R A lock 33 Fig 1d When this axis is unlocked the telescope pivots on the R A axis Later in the procedure you will also unlock the Declination or Dec lock 17 Fig 1d When unlocked the telescope pivots on the Dec axis Most of the motion of the telescope takes place by moving about these two axes separately or simultaneously Try to become familiar with these locks and observe how the telescope moves on each axis To obtain a fine balance of the telescope follow the method below 1 Firmly hold the optical tube secure so that it cannot accidentally swing freely Loosen the R A lock 33 Fig 1d The optical tube now moves freely about the R A axis Rotate the telescope so that the counterweight shaft 22 Fig 1d is parallel horizontal to the ground Unlock the counterweight lock knob and slide the counterweight 21 Fig 1d along the counterweight s
82. ht may reveal what appears to be scratches dark or bright spots or just generally uneven coatings giving the appearance of poor quality optics These items are only seen when a high intensity light is transmitted through lenses or reflected off the mirrors and can be seen on any high quality optical system including giant research telescopes The optical quality of a telescope cannot be judged by the flashlight test the true test of optical quality can only be conducted through careful star testing Meade Customer Service If you have a question concerning your LXD75 Series telescope contact the Meade Instruments Customer Service Department at Telephone 949 451 1450 Customer Service hours are 7 00 AM to 6 00 PM Pacific Time Monday through Friday In the unlikely event that your LXD75 Series telescope requires factory servicing or repairs write or call the Meade Customer Service Department first before return ing the telescope to the factory giving full particulars as to the nature of the problem as well as your name address and daytime telephone number The great majority of servicing issues can be resolved by telephone avoiding return of the telescope to the factory If factory service is required you will be assigned a Return Goods Authorization RGA number prior to return North Celestial 490 Dec Pole Vicinity of Polaris E Right Ascension South Celestial Pole 90 Dec Celestia
83. ia 38 N Seattle Washington 47 N Washington District of Columbia 39 N EUROPE City Country Latitude Amsterdam Netherlands 52 N Athens Greece 38 N Bern Switzerland 47 N Copenhagen Denmark 56 N Dublin Ireland 53 N Frankfurt Germany 50 N Glasgow Scotland 56 N Helsinki Finland 60 N Lisbon Portugal 39 N London England 51 N Madrid Spain 40 N Oslo Norway 60 N Paris France 49 N Rome ltaly 42 N Stockholm Sweden 59 N Vienna Austria 48 N Warsaw Poland 52 N SOUTH AMERICA City Country Latitude Bogot Colombia 4 N S o Paulo Brazil 23 S Buenos Aires Argentina 35 S Montevideo Uruguay 35 S Santiago Chile 34 S Caracas Venezuela 10 N ASIA City Country Latitude Beijing China 40 N Hong Kong China 23 N Seoul South Korea 37 N Taipei Taiwan 25 N Tokyo Japan 36 N Sapporo Japan 43 N Bombay India 19 N Calcutta India 22 N Hanoi Vietnam 21 N Jedda Saudi Arabia 21 N AFRICA City Country Latitude Cairo Egypt 30 N Cape Town South Africa 34 S Rabat Morocco 34 N Tunis Tunisia 37 N Windhoek Namibia 23 S AUSTRALIA AND OCEANIA City State Country Latitude Adelaide South Australia 35 S Brisbane Queensland 27 S Canberra New South Wales 35 S Alice Springs Northern Territory 24 S Hobart Tasmania 43 S Perth Western Australia 32 S Sydney New South Wales 34 S Melbourne Victoria 38 S Auckland New Zealand 37 S Important Note The Ele
84. iece holders for both 1 25 and 2 eyepiece holders tube cradle assembly with two rings and two lock knobs gm Super Pl ssl SP 26mm eyepiece gm Counterweight and counterweight shaft The 8 and 10 models include extra counterweights m 8 x 50mm all models except N 6EC Newtonian or 6 x 30mm N 6EC Newtonian only viewfinder gm Factory mounted dual electronic motor drive assembly m Autostar handbox detachable coil cord or Electronic Controller g Battery pack and holder Accessories gm Hex keys T Adapter included with Schmidt Newtonian models only How to Assemble Your Telescope The giftboxes contain the optical tube assembly and the tripod with the equatorial mount The accessories are located within compartments custom cut into the styro foam block inserts 1 Remove the components from the giftboxes Remove and identify the tele scope s equipment Refer to Figures 1a through 1f for images of the parts and the overall assembly of your telescope When removing the tripod from the gift box hold the assembly parallel horizontal to the ground or the inner tripod leg extensions will slide out as they are not locked in place Adjust the tripod legs Spread the tripod legs as far as they will open See Fig 3 Attach the spreader bar to the tripod with shaft Thread the tension knob onto the shaft see Fig 4 Place the spreader bar over the T handle shaft Slide the bushing the wide open side facing downward onto the
85. ilable speeds are Light 1 21200 x sidereal 300 arc min sec or 5 sec Light 2 32 x sidereal 8 arc min sec Light 3 8 x sidereal 2 arc min sec Light 4 2 x sidereal 0 5 arc min sec The two slowest speeds 2x and 8x sidereal can be used for manual tracking of astronomical objects while observing through the eyepiece To move the telescope using the Electronic Controller 1 Insert a low power eyepiece e g SP 26mm into the eyepiece holder 2 Fig 1 and tighten the eyepiece thumbscrew 1 Fig 1 2 Tighten the R A and Dec locks 17 and 33 Fig 1 if necessary 3 Verify that the On Off switch 24D Fig 1 on the telescope s Computer Control panel is off 4 Plugin the Electronic Controller coil cord 4 Fig 49 to the HBX port 24A Fig 1 on the Computer Control panel 5 Flip the power switch to ON The LED 24C Fig 1 on the Computer Control panel lights The Speed indicators lights will cycle off and on in sequence 6 Press any key on the Electronic Controller and the telescope slews momentarily in the vertical and horizontal directions to test the motors e e e e e e x e Step 2 Step 3 e e e O e O O Step 4 Step 5 Fig 52a Indicator Light Key for changing tracking rates in the Northern Hemisphere Polar mode O00 Step 4 Step 5 Fig 52b Indicator Light Key for changing tracking rates in the Southern Hemisphere Polar mode
86. ing controls which greatly facilitate locking onto the guide star Turn the finely threaded controls and place the reticle s crossline pattern precisely at the desired position in the field The sharp high power imaging of the 4 element multi coated Pl ssl optical system is complemented by a rubber eyecup foldable for eyeglass wearers that shuts out dis tracting stray light from the observer s eye The upper lens section of the eyepiece rotates on a fine thread for precise diopter adjustment to the user s eye Reticle pat tern is a double crossline with two concentric circles Optional 497 Autostar Computer Controller for LXD75 EC Users One of the most important advances in telescope control in the past 25 years the Meade Autostar Computer Controller turns your LXD75 EC model into an automatic celestial object locating system Just plug Autostar into the telescope s HBX port in place of the standard equipment Electronic Controller do a quick telescope alignment and you are ready to observe any object in the Autostar s 30 000 object database Any of Autostars database objects can be called up and entered on the hand con troller display in seconds The observer then simply presses the GO TO pushbutton and watches as the telescope automatically slews to the object and places it in the field of view Autostar moves the telescope to automatically track follow the object across the sky Autostar brings into easy access objects that wer
87. ional Autostar handbox for EC model users nal of the telescope followed by an eyepiece The 1A Skylight Filter threads onto the rear cell of the Meade Schmidt Cassegrain SC 8 model and effectively seals the interior of the telescope from dust All other rear cell accessories may then be thread ed to the 1A filter The filter increases visual and photographic contrast decreases glare and helps to penetrate haze 1205 Electric focuser For use with LXD75 Schmidt Cassegrain SC 8 model Meade electric focusers are uniquely designed to yield smooth precise microfocus ing of the image without disabling the manual focus knob which may be used for rapid coarse focusing Includes push button hand controller with self contained user provided battery 1209 Microfocuser For use with LXD75 Schmidt Cassegrain SC 8 model Supplied with a handbox the microfocuser threads directly to the rear cell of model SC 8 Permits precise focusing of the image during visual or photographic applica tion during CCD applications maintains precise image centration on even the small est CCD chips Operates at four speeds from extremely slow to fast accepts both 2 and 1 25 eyepiece barrels Requires 8 x AAA user supplied batteries Series 4000 Pl ss 9mm Illuminated Reticle Eyepiece The most advanced com mercially available illuminated reticle eyepiece this Series 4000 Pl ssl 9mm model powered by an internal battery includes micrometric x y position
88. is pressed for two seconds or more and then released Autostar emits a beep and ENTER to Sync is displayed ENTER to Sync may be used only after your telescope has been aligned and is pointing at an object See page 30 for more details o MODE Key Press to return to the previous menu level The top menu level is Select Item The MODE key is similar to the ESCAPE key on a computer Note Pressing MODE repeatedly while in the Select Item level moves Autostar to the topmost screen Select Item Object Note If MODE is pressed and held for two seconds or more information about the telescope s status displays When the status displays press the Scroll keys 7 Fig 2 to display the following information and more m Right Ascension and Declination astronomical coordinates m Altitude vertical and Azimuth horizontal coordinates m Local Time and Local Sidereal Time LST E Timer and Alarm Status Press MODE again to return to the previous menu coro Key Press to slew move the telescope to the coordinates of the cur rently selected object While the telescope is slewing the operation may be abort ed at any time by pressing any key except GO TO Pressing GO TO again resumes the slew to the object Also press GO TO after a slew is completed to activate a spiral search arrow Keys Press to slew the telescope in a specific direction up down left and right at any one of nine different speeds See SLEW SPEEDS
89. keys that is comfortable for you m Alt Dec Percent The option operates identical to the Az R A Percent option see above but allows you to change the altitude or declination backlash i e the way the telescope responds to the Arrow keys when moving along the altitude or ys declination axes l Wanka Jaarn mora about m Train Drive Trains the Altitude Declination and Azimuth R A motors to locate Training the Drive See objects with more precision 2s LXD75 TIPS box page m Tracking Rate Changes the speed at which the telescope tracks targets in the sky a Sidereal The default tracking setting for Autostar sidereal rate is the stan dard rate at which stars move from East to West across the sky due to the rotation of the Earth LXD75 TIPS Observing Considerations Try to pick an observing site away from street and house lights and car head lights While this is not always possible the darker the site the better Give your eyes about ten minutes to adjust to the darkness before observing Give your eyes a rest from observing every ten or fifteen minutes to relieve eyestrain Try not to use a standard flashlight Experienced observers use red LED flash lights the red utility light on the Autostar handbox or tape red cellophane over their flashlights to use for setup and map reading so they don t have to contin ually readjust their eyes to the darkness Be careful not to shine bright lights if there are othe
90. l Equator 0 Dec Fig 41 Celestial Sphere A celestial coordinate system was created that maps an imaginary sphere surround ing the Earth upon which all stars appear to be placed This mapping system is simi lar to the system of latitude and longitude on Earth surface maps In mapping the surface of the Earth lines of longitude are drawn between the North and South Poles and lines of latitude are drawn in an East West direction parallel to the Earth s equator Similarly imaginary lines have been drawn to form a latitude and longitude grid for the celestial sphere These lines are known as Right Ascension and Declination The celestial map also contains two poles and an equator just like a map of the Earth The poles of this coordinate system are defined as those two points where the Earth s north and south poles i e the Earth s axis if extended to infinity would cross the celestial sphere Thus the North Celestial Pole 1 Fig 41 is that point in the sky where an extension of the North Pole intersects the celestial sphere The North Star Polaris is located very near the North Celestial Pole The celestial equator 2 Fig 41 is a projection of the Earth s equator onto the celestial sphere Just as an object s position on the Earth s surface can be located by its latitude and longitude celestial objects may also be located using Right Ascension and Declination For example you could locate Los Angeles Calif
91. l the other LXD75 models equipped with an Autostar handbox with one exception the optical tube is attached to the mount with a mounting bracket rather than the cra dle ring assembly The optical tube is shipped with the mounting bracket already attached To attach the mounting bracket optical tube assembly to the mount perform the following steps 1 2 Perform steps 1 through 6 as described in HOW TO ASSEMBLE YOUR TELESCOPE pages 11 and 12 Slide the mounting bracket into the cradle assembly mounting slot For most applications set the groove in the bracket next to the cradle locking knob so that the bolt of the cradle locking knob will enter the groove when the knob is tight ened Tighten both the cradle locking knob and the secondary locking knob to a firm feel See Fig 54 If you are using heavy accessories such as a camera microfocuser etc on the back end of the tube you may need to balance the tube differently to keep the tube from drifting downward Slide the mounting bracket and tube forward until the screws at the back end of the tray touch the mount See Figs 54 and 55 Then tighten the cradle locking knob and the secondary locking knob to a firm feel Continue the assembly with step 9 as described in HOW TO ASSEMBLE YOUR TEL ESCOPE page12 and complete all the subsequent steps All other procedures are identical as described earlier in this manual Fig 56 The Moon Note the deep shadows in the craters
92. le see OPTIONAL ACCESSORIES page 37 Important Note In order for the Smart Drive training to operate and be updated properly you must park the telescope see PARK SCOPE page 28 PEC Train Menu Option To perform the procedure on the R A axis pick a bright star in the South that has min imal movement and is about 30 above the horizon Note If in the Southern hemi sphere pick a star in the North that is about 30 above the horizon Important Note The Train option overwrites any previous PEC data 1 Select PEC Train from the Smart Drive menu in the Setup Telescope menu and press ENTER 2 Look through the reticle Use the Arrow keys to keep the star centered in the reticle cross hairs Autostar displays a count of the 150 positions of the worm gear When the count reaches 150 one cycle is complete A full cycle takes about 12 minutes 3 Press MODE to exit PEC Update Menu Option PEC Update does not overwrite the data but updates the training using information gathered from both the last and the current training sessions Press the MODE key to exit from this option If you wish to further refine your training select this menu again and repeat the procedure PEC Erase Menu Option Select this option to erase all PEC training data Latitude Chart for Major Cities of the World To aid in the polar alignment procedure see pages 17 21 latitudes of major cities around the world are listed below To determine t
93. le or lamp post to train the drive It is best to perform this procedure during the daytime If you have just performed INITIALIZING AUTOSTAR go to step 2 If you have not yet initialized Autostar go to page 19 and follow the procedure described in INITIALIZING AUTOSTAR Then go to step 2 of this procedure Keep pressing MODE until Select Item Object displays Press the Scroll Up key once Select Item Setup displays Press ENTER to access the Setup menu Setup Align displays Keep pressing the Scroll Up key until Setup Telescope displays Press ENTER to access the Telescope menu Telescope Focal Length displays Keep pressing the Scroll Down key until Telescope Train Drive displays Press ENTER to choose the Train Drive option Train Drive Az RA Train dis plays Press ENTER to begin Az R A Right Ascension training Drive Setup For this begins to scroll across the display This is a reminder to point your telescope at a terrestrial object Loosen the R A and Dec locks 17 and 33 Fig 1d and point the telescope at an object Then re tighten the locks Press ENTER when the telescope is pointing at the desired terrestrial object Center reference object displays Center your target object using the Arrow keys When centered press ENTER The telescope slews and Press until it is centered displays Press the Right Arrow key until the target is centered again Then press ENTER Note If you pass the
94. lection 3 Fig 39 the three Phillips head secondary mirror tilt screws 2 Fig 35 should be slightly unthreaded to the point where the secondary mirror holder 3 Fig 35 can rotate about its axis parallel to the main tube Grasp the secondary mirror holder avoid touching the mirror surface with your hand and rotate it until looking through the drawtube you can see the primary mirror centered as well as possible in the reflection of the secondary mirror With the rotation of the second ary mirror holder at this best possible position thread in the three Phillips head screws 2 Fig 35 to lock the rotational position Then if necessary make adjust ments to these three Phillips head screws to refine the tilt angle of the secondary mir ror until the entire primary mirror can be seen centered within the secondary mirror s reflection With the secondary mirror thus aligned the image through the drawtube appears as in Fig 40 4 Primary mirror adjustments lf the secondary mirror 1 Fig 40 and the reflection of the primary mirror 2 Fig 40 appear centered within the drawtube 3 Fig 40 but the reflection of your eye and the reflection of the secondary mirror 4 Fig 40 appear off center then the primary mirror tilt requires adjusting using the Phillips head screws of the primary mirror cell 3 Fig 36 These primary mirror tilt screws are located behind the primary mirror at the lower end of the main tube See Fig
95. left and right of it 1 2 Rotate the mount about the R A axis only and move the optical tube to position A WITHOUT moving the declination axis from its position determined in the previ ous alignment adjust the legs latitude and azimuth of the tripod to center the object in the eyepiece Procedure 2 Step 2 Step 4 Step 5 Step 6 Rotate the telescope 180 in the R A axis ONLY until optical tube is in position B Observe the position of the object in the eyepiece Assuming that the declination was properly set in the previous procedure the object should have moved only horizontally that is side to side from its original position It may be out of the eyepiece altogether Using the adjustment mechanism on the bottom of the cradle Fig 47 move the reference object approximately half the distance towards the center of the eye piece To adjust the cradle screws use the supplied hex key to loosen the two outside screws Then adjust the position of the object by tightening or loosening the cen ter screw Perform this adjustment on both sets of screws When finished retight en the outer screws Before moving the optical tube note the location that the telescope is centered on relative to the reference object Depending on the telescope type and acces sories in use you may need to move the optical tube opposite to the direction that appears in the eyepiece The best way to be sure is to move the optical tube usin
96. loaded a new version of Autostar software from the Meade website www meade com and wants to pass this software along to friends m All Everything user defined information and Autostar software is sent to anoth er Autostar Statistics provides basic statistical data about Autostar including W Characters Free Shows how much room is available in user defined object memory gm Version Shows the current version of the Autostar software Reset completely resets Autostar Most values entered into the menus revert to facto ry defaults Autostar requires initialization after a Reset before proceeding with obser vations See INITIALIZING AUTOSTAR page 19 LXD75 TIPS Surf the Web One of the most exciting resources for astronomy is the internet The internet is full of websites with new images discoveries and the latest astronomical information For example when comet Hale Bopp made its approach to our Sun in 1998 astronomers around the world posted new photos daily You can find websites for almost any topic relating to astronomy on the internet Try the following key word searches NASA Hubble HST astro y Messier satellite nebula black hole variable stars etc Check out Meade s website for the latest product and technical information You can download the latest software revisions links to other astronomical sites coordinates of celestial objects and the latest satellite tracking information for your Autostar handset S
97. lug one end of the Autostar coil cord into the HBX port A Fig 1e of the computer control panel of the telescope and the other end into the Autostar coil cord port See RS232 Port Plug in RS232 connections for downloading and connecting to com puter Useful for downloading the latest satellite data and software revisions directly from the Meade website www meade com Requires optional 505 AstroFinder Software and Cable Connector Kit See OPTIONAL ACCESSORIES page 38 Utility Light Use this built in red light to illuminate star charts and accessories without disturbing your eye s adaptation to darkness Press 0 to turn the light on and off Fig 5b Snap e clip all the way onto shaft above mount shown partially attached Azimuth Control Knobs Place mount over shaft with bushing and c clip Fig 5c Attach the mount to the tripod Dec Setting Circle cit 3 55S Base Counterweight Lock E iem Knob Fig 6 Attach counterweight assembly As you unpack your telescope carefully note the following parts The assembly is shipped in separate boxes Telescope Assembly gm Equatorial mount with polar alignment finder m Heavy duty adjustable aluminum tripod with leg braces three tripod leg lock knobs and a captive mount locking knob m Complete optical tube assembly including primary mirror with dust cover and a rack and pinion focuser and eyep
98. m 67 48 1 39 49 1 37 82 0 82 32mm 67 2 O D 37 1 82 38 1 79 63 1 07 40mm 67 2 O D 30 2 27 30 2 23 50 1 34 Ultra Wide Angle Eyepieces 8 elements 1 25 O D except as noted 4 7mm 84 251 0 33 255 0 33 426 0 20 6 7mm 84 176 0 48 179 0 47 299 0 28 8 8mm 84 1 25 2 O D 134 0 63 136 0 62 227 0 37 14mm 84 1 25 2 O D 84 1 00 86 0 98 143 0 59 Fig 27 Series 4000 8 24mm Zoom Eyepiece Fig 28 Series 4000 Photo Visual Fig 29 Series 4000 Nebular Filters Series 4000 8 24mm Zoom Eyepiece The internal zoom optics of this eyepiece move on smooth precisely machined surfaces which maintain optical collimation at all zoom settings A scale graduated in 1mm units indicates the zoom focal length in operation An excellent addition to any eyepiece set 140 2x Barlow Lens A 3 element design doubles each eyepiece power while maintaining uncompromised image resolution color correction and contrast Insert the 140 into the telescope s eyepiece holder first followed by the diagonal as appli cable and eyepiece The 126 2x Barlow Lens a compact 2 element alternative to the 140 may also be employed with any LXD75 Series telescope 905 Variable Polarizer 1 25 The 905 system includes 2 Polarizer filters mount ed in a specially machined cell for glare reduction in observing the Moon Rotate the thumbscrew at the side of the u
99. ming one of the following align ment methods before the initial use of the telescope and periodically thereafter will increase the mount s pointing accuracy When the optical axis is perfectly aligned to the R A axis and the declination set to 90 all objects will rotate about a point in the center of the eyepiece as the mount is rotated about the R A axis A misalignment in elevation results in the center of rotation shifting up or down A misalignment in attitude results in the center shifting left or right The telescope is moved manually in Method 1 to correct for attitude misalignment and then for elevation misalignment Autostar moves the telescope in Method 2 Procedure 1 To correct for attitude misalignment Important Note Throughout the following procedures the directional refer ences up down left right are used No matter which type of telescope model you are using these directions are to be interpreted relative to real world tar gets For example left right moves the image along the horizon and up down moves the image vertically Perform this procedure during the daytime You will need to have a clear line of sight to a wide distinct landmark with a clear horizontal feature 1 Plug in Autostar and turn on the power as described previously in this manual You will use Autostar s Arrow keys in the course of this procedure 2 Loosen the R A Lock 33 Fig 1d and the Dec Lock 17 Fig 1d Point the tube so th
100. n timer This feature is useful for functions such as astropho tography and tracking satellites To use the Timer press ENTER then choose Set or Start Stop Tip If you notice that the text is smearing on the Autostar display use the contrast adjustment menu Want to learn more about Landmarks See page 34 gm Set Enter the time to be counted down in hours minutes and seconds then press ENTER gm Start Stop Activates the timer set previously Use the Scroll keys to toggle between ON and OFF When ON is displayed press ENTER to activate the timer When the timer runs out four beeps sound and the timer is deactivated Alarm selects a time for an alarm signal as a reminder To use the Alarm press ENTER then choose Set or Start Stop gm Set Enter the time of day for the alarm to sound in hours minutes and seconds then press ENTER gm Start Stop Activates the alarm set previously Use the Scroll keys to toggle between on and off When ON is displayed press ENTER to activate the alarm When the alarm time arrives Autostar beeps Press ENTER to deactivate the alarm Eyepiece Calc calculates information about an eyepiece for the specific telescope to which Autostar is connected m Field of View Scroll through a list of available eyepieces When an eyepiece is selected the field of view is calculated m Magnification Scroll through a list of available eyepieces When an eyepiece is sel
101. nate of your object When you are finished press ENTER 7 Declination 00 00 displays Use the Number keys to enter the digits for the Declination coordinate of your object If necessary use the Scroll Keys to change to When you are finished press ENTER 8 Autostar then prompts you to enter the size of the object This step is optional Use the Number keys to enter the size in arc minutes if so desired and press ENTER to go to the next display If you do not wish to enter this information sim ply press ENTER 9 Autostar then prompts you to enter the magnitude of the object This step is also optional Use the Number keys to enter this information if so desired and press ENTER to go to the next display User Object Add displays again To GO TO a user entered object In this procedure you will choose an object from the User Object list and GO TO the object 1 With User Object Add displayed press the Scroll Up key once User Object Select displays Press ENTER Use the Scroll keys if necessary to scroll to the desired object Press ENTER The name of the object and the Right Ascension and Declination coordinates dis play 4 Press GO TO and the telescope slews to the object Tip To easiest way to get satellite information is to go to the Meade website and click Autostar Update in the Customer Support sec tion Follow the on screen instructions to automatically download the informati
102. ng 2 If the reflection of the primary mirror 3 Fig 31a is not centered on the surface of the diagonal mirror adjust the 4 collimation screws on the plastic diagonal mirror E Lass housing to center the reflection m b CN As described above the 4 collimation screws Fig 31b on the plastic diagonal mirror housing are used for two different adjustments during the collimation procedure knurled knob Important Note Do not force the 4 screws past their normal travel and do not rotate any screw or screws more than 2 full turns in a counter thumb j i gt clockwise direction i e not more than 2 full turns in their loosening direction or else the diagonal mirror may become loosened from its support Note that the diagonal mirror collimation adjustments are very sensitive generally turning a collimation screw 1 2 turn will have a dra matic effect on collimation 3 If the reflection of the diagonal mirror is not centered within the reflection of the pri mary mirror adjust the 3 collimation screws located on the rear of the primary mirror cell Fig 31c The six collimation screws on the rear of the primary mirror cell Note There are 6 screws Fig 31c on the primary mirror cell The 3 knurled knobs are the collimation screws and the 3 smaller thumb screws are locking screws The locking screws must be loosened slightly in order to adjust the collimation screws Proceed by trial and
103. ng a more dramatic image Using your LXD75 Series telescope brilliant detail can be observed on the Moon includ ing hundreds of lunar craters and maria described below Craters are round meteor impact sites covering most of the Moon s surface With no atmosphere on the Moon no weather conditions exist so the only erosive force is meteor strikes Under these conditions lunar craters can last for millions of years Maria plural for mare are smooth dark areas scattered across the lunar surface These dark areas are large ancient impact basins that were filled with lava from the interior of the Moon by the depth and force of a meteor or comet impact Twelve Apollo astronauts left their bootprints on the Moon in the late 1960 s and early 1970 s However no telescope on Earth is able to see these footprints or any other artifacts In fact the smallest lunar features that may be seen with the largest tele Scope on Earth are about one half mile across Fig 57 The giant planet Jupiter The four largest moons can be observed in a different position every night Fig 58 Saturn has the most extensive ring struc ture in our Solar System Fig 59 The Pleiades is one of the most beautiful open clusters Planets Planets change positions in the sky as they orbit around the Sun To locate the plan ets on a given day or month consult a monthly astronomy magazine such as Sky and Telescope or Astronomy You can also consul
104. nged 2 Scrollto Site Edit and press ENTER Edit Name displays Press ENTER 3 The name of the site you have just entered to your list displays if it does not scroll to the site 4 Using the Arrow keys change the name of the site so that it now reads the name of your observing location Press ENTER Edit Name displays again 5 Press the Scroll Down key and Edit Latitude displays Press ENTER 6 Using the Number Keys enter the latitude of your observing site and then press ENTER Edit Latitude displays again 7 Press the Scroll Down key and Edit Longitude displays Press ENTER 8 Using the Number Keys enter the longitude of your observing site and then press ENTER Edit Longitude displays again 9 Press the Scroll Down key and Edit Time Zone displays Press ENTER If the site you chose from the list in step 1 has the same Time Zone as the site you are editing just press ENTER again to go on to the next step Time Zone refers to the Greenwich Time Zone shift Users West of Greenwich use hours one hour per time zone and users East of Greenwich use hours For the United States look up the shift in TABLE 1 at the left 10 After entering the shift press ENTER Edit Time Zone displays Tip Entering R A and Dec Coordinates of an object without using the menus If you do not wish to navigate through the menus a more direct way to enter coordi nates is to press and hold MODE
105. nit to achieve light transmission between 5 and 25 of its original value The 905 inserts into the diagonal of the telescope followed by an eyepiece Series 4000 Photo Visual Color Filters Color filters significantly enhance visual and photographic image contrast of the Moon and planets Each filter threads into the barrel of any Meade 1 25 eyepiece and into the barrels of virtually all other eyepiece brands as well Meade filters are available in 12 colors for lunar and planetary appli cations and in Neutral Density as a lunar glare reduction filter Series 4000 Nebular Filters A modern boon to the city dwelling deep space observer the interference nebular filter effectively cancels out the effects of most urban light pollution while leaving the light of deep space nebular emissions virtual ly unattenuated Meade Series 4000 Nebular Filters utilize the very latest in coating technology and are available with threaded cells for eyepieces or for attachment to the rear cells of Meade Schmidt Cassegrain models 928 45 Erect Image Diagonal Prism Primarily used for terrestrial viewing this prism presents a correctly oriented image at a comfortable 45 viewing angle 547 Power Adapter with Cable Includes a 25 ft cord and permits powering from a standard home 115v AC outlet The 547F Power Adapter is available for 220v AC outlets 607 Cigarette Lighter Adapter Power a LXD75 Series telescope by means of an automobile cigarette
106. ntical man ner Refer to Figs 14a and 14b 1 Remove the dust covers from the optical tube 9 Fig 1a and the viewfinder 2 If you have not already done so insert the low power SP 26mm eyepiece 3 Fig 1b into the eyepiece holder of the main telescope See step 10 page 12 3 Look through the viewfinder eyepiece at an object at least one half mile away Tip Remove the viewfinder tube from the bracket to simplify this operation If the distant object is not in focus turn the focus lock ring counterclockwise to loosen the viewfinder front cell 6 Fig 1b Twist the front cell until focus is achieved and retighten the focus lock ring 4 Unlock the R A lock 33 Fig 1d and the Dec lock 17 Fig 1d so that the tele scope turns freely on both axes Then point the main telescope at a tall well defined and stationary land object e g the top of a telephone pole at least 200 yards distant and center the object in the telescope s eyepiece Focus the image by turning the focus knobs 8 Fig 1b Retighten the R A and Dec locks 5 Look through the viewfinder and loosen or tighten as appropriate one or more of the viewfinder collimation thumbscrews 5 Fig 1b until the viewfinder s crosshairs are precisely centered on the object you previously centered in the main telescope s eyepiece You are now ready to make your first observations with your telescope NEVER point the telescope directly at or near the Sun at any time
107. num Input Voltage eem 12v DC Alignment idend German type equatorial mount Slew Speeds SN 8 1x sidereal to 4 5 sec in 9 increments SN 8EC 2x sidereal to 4 5 sec in 4 increments Tripod zia i Ies Variable height field tripod ACCOSSOFIOS cereo 8 x 50mm finder T Adapter Super Pl ssl 26mm eyepiece 1 25 and 2 eyepiece holders Battery pack for 8 D cell batteries user supplied SN 8 Autostar Controller SN 8EC Electronic Controller Polar Finder Reticle Batteries Maxell LR41 or equivalent Net telescope weight 24 Ibs Net tripod weight 45 lbs 10 f 4 Model SN 10AT Specifications Optical design Schmidt Newtonian Clear aperture 10 254mm Focal length ccesesceeeseeeeeseeeeeseeeeesscees 1016mm Focal ratio photographic speed f 4 Resolving power eee 0 45 arc secs Coatings ss ioter HERRERA Meade EMC Super Multi Coatings Ultra High Transmission Coating optional Mountitig deena ite aei Die cast aluminum Input Voltage emm 12v DC Alignment etos German type equatorial mount Slew Speeds 1x sidereal to 4 5 sec in 9 increments Tripod itis matched Va
108. num ber as well as entering the Time and Date the first time you use Autostar or after performing a Reset Make sure that the telescope is assembled correctly and that the batteries are installed as described previously Make sure the On Off switch D Fig 1e is in the Off position Plug Autostar s cord into the HBX port A Fig 1e as previously described Push the On Off Switch to the On position A copyright message lights on Autostar s LCD display and a message warning not to look at the Sun scrolls across the display Press the key prompted by Autostar to acknowledge the message has been read and understood The Getting Started menu displays a scrolling message with two choices a Press and hold down the key 8 Fig 2 for about 2 seconds for informa tion on Autostar functions and controls When finished press MODE 3 Fig 2 to exit Help or b Press ENTER 2 Fig 2 to bypass the Help tutorial and continue with Initialization Autostar prompts you to enter the current date a Press the Numbers keys 6 Fig 2 to enter numbers 0 through 9 After the desired number is displayed use the Right Arrow key 5 Fig 2 to move the cursor from one number to the next in the day display or use the Left Arrow key to move in the other direction across the display if necessary b Usethe Right Arrow key 5 Fig 2 to move the cursor to the month Use the Scroll keys 7 Fig 2 to cycle through the list of months When the
109. o be more pre cisely aligned with true North The polar alignment viewfinder contains a reticle lit by an LED Figs 43a and 43b To align your telescope to North using the polar alignment viewfinder 1 Setyourtelescope in the home position see page 17 Then loosen the Dec lock 17 Fig 1d and rotate the optical tube 90 Re tighten the Dec Lock 2 Loosen the R A Lock 33 Fig 1d 3 Remove the polar viewfinder cap 18 Fig 1d 4 f you have not already done so remove the plastic separating the watch batter ies inside the polar alignment reticle See step 12 page 13 5 Turn the polar alignment reticle LED knob to turn on the LED and look through the reticle 6 Northern Hemisphere Move the telescope mount until Polaris is superimposed on the graduated area of the reticle between 40 and 60 The center crosshair denotes the North celestial pole Southern Hemisphere The four sided figure in the reticle represents a grouping of four stars in Octantis Sigma Tau Chi and Upsilon for use in the Southern Hemisphere Move the telescope mount on its R A axis until the four stars depicted in the reticle are superimposed on the four star group that matches the reticle pattern 7 Usethe latitude T handle screws 26 Fig 1d and the fine azimuth control knobs 27 Fig 1d to fine tune the mount adjustment until the reticle pattern is more precisely superimposed over the appropriate position as described in step 6 Note Not
110. object when pressing the Arrow key you cannot slew the telescope back in the other direction Press MODE until Train Drive AZ RA Train displays and begin the procedure over again The telescope slews and Press until it is centered displays Press the Left Arrow key until the target is centered again Then press ENTER Train Drive Az RA Train displays again Press the Scroll Down key and Train Drive Alt Dec Train displays Press ENTER to begin Alt Dec Declination training Note Three other align ment methods One Star Two Star and Three Star Polar alignment are available as options in the Setup Align menu See page 51 and page 55 for more information Tip The GO TO key also allows you to perform a spiral search A spiral search is useful when the telescope slews to an object but that object is not visible in the eyepiece after the telescope finishes a its search This some times occurs during an alignment procedure Press GO TO when the telescope stops slewing The telescope begins to move in a spiral pattern at a very slow speed you may change the slew speed if you wish see SLEW SPEEDS page 16 around the search area Look through the eyepiece and when the object does become visible press MODE to stop the spiral search Then use the Arrow keys to center the object 15 Drive Setup For this begins to scroll across the display This is another reminde
111. ocus The LXD75 Series telescopes can be focused on objects from a distance of about 75 ft to infinity Rotate the focus knobs to focus on objects Corrector Dust Cover Place the dust cover not visible in photo over the cor rector when storing the telescope Note The dust cover should be replaced after each observing session and the power turned off to the telescope Allow time for any dew that might have collected during the observing session to evaporate prior to replacing the dust cover Optical Tube The main optical component that gathers the light from distant objects and brings this light to a focus for examination through the eyepiece Cradle Assembly Attaches to mount base See and Autostar See pages 9 and 10 for a description of features Cradle Ring Lock Knobs 2 and Washers 2 Slide washers onto lock knobs before inserting Tighten to a firm feel to secure the optical tube in place Cradle Rings 2 Part of the cradle assembly see hold the optical tube firm ly in place e eee o Caution When loosening the Dec lock be sure to support the optical tube 18 Fig 1a The weight of the tube could cause the tube to swing suddenly e Want to learn more about setting the lati tude dials e e e e o ee Viewfinder Bracket Screws Tighten to a firm feel to hold viewfinder securely in place see and See page 12 for more information Focus Lock Knob Desi
112. olonged periods may leak causing damage to the telescope s electronic circuitry g Do not leave your LXD75 inside a sealed car on a warm summer day excessive ambient temperatures can damage the telescope s internal lubrication and elec tronic circuitry Alignment Collimation of the Schmidt Newtonian Optical System All Meade Schmidt Newtonian telescopes are precisely collimated at the factory before packing and shipment and it is probable that you will not need to make any optical adjustments before making observations However if the telescope sustained rough handling in shipment you may need to re collimate the optical system Such re collimation is not a difficult procedure in any case The collimation procedure for the Meade Schmidt Newtonians is slightly different from that of other Newtonian reflecting telescopes because of the fast f 4 to f 5 focal ratio of the primary mirror In typical Newtonian reflectors with more conventional focal ratios i e longer focal ratios when the observer looks down the focuser tube with out an eyepiece in the focuser the images of the diagonal mirror primary mirror focuser tube and the observer s eye appear centered relative to each other However with the short focal ratio primary mirror of the Schmidt Newtonian correct collimation requires that the diagonal mirror be offset in 2 directions 1 away from the focuser and 2 towards the primary mirror in equal amounts This offset is
113. on to your Autostar handbox The optional 505 Astrofinder Software and Cable Connector Kit is required to use the Autostar Update Utility Tip To use the Landmark func tion the telescope must be located and aligned exactly as when the landmark s was added to the database Observing Satellites In this procedure you will prepare your telescope to observe a satellite pass 1 Navigate to the Object Satellite menu option and press ENTER 2 Use the Scroll keys to scroll through the list of satellites 3 Select a satellite from the list and press ENTER 4 Calculating and then Tracking displays If the satellite is going to make a pass Located displays 5 Use the Scroll keys to display data about the pass aos acquisition of signal and los loss of signal If you subtract the aos from the los you can calculate how long the satellite will be visible Location information also displays 6 Alarm displays after the location information Press ENTER and Autostar auto matically sets the alarm to sound a minute before the satellite s scheduled appearance You may return to regular observations until the alarm goes off 7 When the alarm goes off return to the Satellite menu and press a Scroll key until the desired satellite is on the top line of the display 8 Press GO TO Autostar slews the telescope to where the satellite should appear The motor drive stops and a countdown is display
114. ope has completed the 180 slew the telescope will be under the mount instead of over it The counterweight shaft is now pointed upwards and the cradle adjustment screws Fig 47 are easily accessible 7 Autostar again prompts you to center the landmark you have chosen in the eye piece Use the Arrow keys to center the object and then press ENTER 8 The telescope moves again on the R A axis Use the cradle screw adjustment mechanism on the bottom of the cradle to center the landmark in the eyepiece To adjust the cradle screws use the supplied hex key to loosen the two outside screws Then adjust the position of the landmark by tightening or loosening the center screw Perform this adjustment on both sets of screws When finished retighten the outer screws The axis is now aligned Note This procedure maximizes the pointing accuracy of the telescope provid ed the telescope is always placed on the mount in the same fashion A mark made on the mount under the saddle will ensure this alignment is maintained Method 4 Smart Drive Training Periodic Error Correction If you wish to improve the gear performance on your telescope first perform the train the drive procedure see page 20 Then use the Periodic Error Correction PEC Train menu option to remove the slight perturbations from center that occur due to the mechanical nature of a telescope To perform this procedure you need to use a high power reticle such as the 9mm retic
115. ornia by its latitude 34 and longitude 118 Similarly you could locate the Ring Nebula M57 by its Right Ascension 18hr and its Declination 33 m Right Ascension R A This celestial version of longitude is measured in units of hours hr minutes min and seconds sec on a 24 hour clock similar to how Earth s time zones are determined by longitude lines The zero line was arbitrarily chosen to pass through the constellation Pegasus a sort of cosmic Greenwich meridian R A coordinates range from Ohr Omin Osec to 23hr 59min 59sec There are 24 primary lines of R A located at 15 degree intervals along the celestial equator Objects located further and further East of the zero R A grid line Ohr Omin Osec carry higher R A coordinates m Declination Dec This celestial version of latitude is measured in degrees arc minutes and arc seconds e g 15 27 33 Dec locations north of the celestial equator are indicated with a plus sign e g the Dec of the North celestial pole is 90 Dec locations south of the celestial equator are indicated with a minus sign e g the Dec of the South celestial pole is 90 Any point on the celes tial equator such as the the constellations of Orion Virgo and Aquarius is said to have a Declination of zero shown as 0 0 0 Setting Circles Setting circles included with the LXD75 Series models permit the location of faint celes tial objects not ea
116. orthern or Southern Hemisphere polar mode was chosen the motor drive starts operating at the sidereal rate 6 Use the four Arrow keys 1 Fig 49 to slew the telescope to the desired object To change the slew speed press SPEED Use the following procedure to change tracking rates when using the Southern Hemisphere polar mode Refer to Fig 52b 1 Press and hold MODE 5 Fig 49 until the Mode function is active e lights 1 and 2 are on steady lights 3 and 4 signify the tracking mode last chosen 2 Press SPEED 3 Fig 49 until lights 1 and 2 are on steady light 3 is off and Light 4 is blinking 3 Press IN 7 Fig 49 and light 4 comes on steady The tracking rate is now 0 5 faster than sidereal Note that when the Mode function is active the tracking motor stops To restart the tracking motor press MODE again Experiment with this function to get the right speed Press IN to set the tracking rate Then press MODE and look through the eyepiece Continue pressing IN and MODE until the object remains centered with little or no drifting in the eyepiece e e O O vv O Xx Step 3 Step 4 e e e e o e X jO V V XX mx o Step 5 Step 6 Step 8 Fig 53 Indicator Light Key for Changing the Polar Mode Note The tracking rate can be increased by up to 65 4 To use arate slower than sidereal press OUT 6 Fig 49 until light 4 blinks again sidereal rate Press OUT
117. oses two stars from its database to align upon When the tele scope slews to the star for alignment it may not appear in the field of view in the eyepiece Use the Arrow keys to move the telescope until the star is visible and centered in the eyepiece The alignment star should be easily recognized and be the brightest star in the area of the sky where the telescope is pointing See WHICH ONE S THE ALIGNMENT STAR page 18 for more information When the star is cen tered press ENTER Repeat the procedure for the second alignment star Note Autostar locates alignment stars based on the date time and loca tion entered The alignment stars may change from night to night All that is required is for the observer to center the selected star in the eyepiece when prompted Go To Saturn Autostar Models Only After performing the Train the Drive and the Easy Alignment procedures the motor drive begins operating and the telescope is aligned for a night of viewing Objects in the eyepiece should maintain e track their position even though the Earth is rotat ing beneath the stars Important Note Once aligned only use the Autostar menus or Arrow keys to move the telescope Do not loosen the telescope locks or move the base manually or alignment will be lost This exercise demonstrates how to select an object for viewing from Autostar s data base i e Saturn Note that Saturn is not visible all year long and it may be necessary for you
118. own key to scroll through other tour choices When the tour you wish to select dis plays press ENTER Tonight s Best Searching displays After calculating Tonight s Best Jupiter displays Note Different objects may be displayed on a tour list on any given night Press ENTER to display information about the object Press GO TO to move the telescope to the object Press MODE to return to the Tour list Press the Scroll keys to scroll through the list Press ENTER when you find the next object you wish to observe Press and hold down MODE for two seconds to leave the Guided Tour menu Important Note Some models are equipped with an Electronic Controller handbox rather than the Autostar Handbox The following sections BASIC AUTOSTAR OPERATION AUTOSTAR MENUS AND USEFUL AUTOSTAR PROCEDURES are rele vant only to models equipped with the Autostar handbox and do not apply to the EC mod els For more information about the EC handbox see APPENDIX D EC HANDBOX page 62 OBJECT MENU Want to see Mars The Orion nebula The Andromeda galaxy Select from over 30 000 database objects and press GO TO to move the telescope automatically to an object Select Item Event EVENT MENU Display the time of past present and future astronomical events such as Moon phases or meteor showers Select Item Guided Tour GUIDED TOUR Autostar escorts you on a tour of tonight s best celestial objects
119. pe rapidly Best viewing is near Sunrise or Sunset when the sky is still dark Viewing in the middle of the night can be problematic because the satellite may pass overhead but not be visible as it is in the Earth s shadow Landmarks This menu option allows you to define and store terrestrial objects in the Landmark database First a landmark needs to be stored in memory using the Landmark Add option To view a landmark use the Landmark Select option Landmarks may also be viewed using the Landmark Survey option in the Utilities menu To Add a landmark to the database In this procedure you will store the location of terrestrial landmarks in Autostar s memory 1 Note for future reference where the telescope is located Select an easily recog nizable reference object and center the object in the telescope eyepiece Each time you wish to view landmarks you have added to the database setup the telescope in this location and center the reference object in the eyepiece If you do not use a consistent point of reference the telescope will not be able to locate the objects you have added to the database Another setup method is to select an object from the Landmark database See TO SELECT A LANDMARK FROM THE DATABASE below Then manually move the tele Scope s optical tube and center this object in the telescope eyepiece Display the Setup Targets menu option Choose Terrestrial and press ENTER Setup Targets displays again
120. r Objects option of the Object menu and allows automatic slewing of the telescope to the user entered coordinates In order to use this menu option you first need to look up the R A and Dec coordi nates of the object or objects you wish to observe Check out your local library com puter store or bookstore for astronomy books CD Roms or magazines such as Sky amp Telescope or Astronomy to find coordinates of celestial objects The objects coor dinates you enter become part of your own permanent database called User Objects To enter coordinates of an object into the User Objects option of the Object menu 1 Make sure Autostar has been initialized and the telescope has been aligned 2 After the telescope is aligned Select Item Object displays If necessary use the Scroll keys to scroll through the menus as previously described to find this option Press ENTER 3 Object Solar System displays Keep pressing the Scroll Up key until Object User Object displays and press ENTER 4 User Object Select displays Press the Scroll Down key once User Object Add displays Press ENTER 5 Name displays on the top line and a blinking cursor on the second line Use the Arrow keys as previously described to enter the name of the object you wish to add to the database When you are finished press ENTER 6 Right Asc 00 00 0 displays Use the Number keys to enter the digits for the Right Ascension coordi
121. r observers in the area Do not shine a flashlight into the tele scope while someone is observing Dress warmly It gets chilly when you re sitting for prolonged periods Practice setting up your equipment during the day or in a lighted area to become familiar with it before going to a dark site Use your 26mm eyepiece to view terrestrial objects and wider areas of space such as open star clusters Use an optional 9mm eyepiece when you wish to view something up close such as craters on the Moon or the rings of Saturn Know your observing site If you re going to try out an unfamiliar site check it out in the daylight for possible obstructions and pitfalls Tip The Reverse L R and U D functions are useful if you are observing in the Southern hemisphere Do you want to learn how to perform the periodic error correction proce dure See SMART DRIVE page 56 Tip If the ENTER to Sync feature is accessed by mistake holding the ENTER key for more than 2 seconds press MODE to return to the previous Screen Want to learn more about adding and editing sites See page 32 Time Zone Shift Atlantic 4 Hours Eastern 5 Hours Central 6 Hours Mountain 7 Hours Pacific 8 Hours Alaska 9 Hours Hawaii 10 Hours Table 1 Time Zone Shift b Lunar Choose this option to properly track the Moon over long observing sessions c Custom Allows entry of user defined tra
122. r to point your telescope at a terrestrial object Loosen the R A and Dec locks 17 and 33 Fig 1d and point the telescope at an object Then re tighten the locks Press ENTER when the telescope is pointing at the desired terrestrial object 16 Center reference object displays Center your target object using the Arrow keys When centered press ENTER 17 The telescope slews and Press uhtil it is centered displays Press the Up Arrow key until the target is centered again Then press ENTER 18 The telescope slews and Press V until it is centered displays Press the Down Arrow key until the target is centered again Then press ENTER Train Drive Alt Dec Train displays again You have now completed this procedure Continue onto the next procedure EASY ALIGNMENT Easy Alignment Autostar Models Only After completing the Train the Drive procedure align your telescope using Autostar The fastest and easiest way to start observing with Autostar s Go To capabilities is to align your telescope using the Easy Alignment 1 Keep pressing MODE until Select Item Setup is displayed Press ENTER 2 Setup Align displays Press ENTER Align Easy displays Press ENTER 3 German North displays and a scrolling message prompts you to set your tele scope in the polar home position See SETTING THE POLAR HOME POSITION page 17 for a description of this procedure Press ENTER after you finish the proce dure 4 Autostar then cho
123. ree Star See EASY ALIGNMENT page 21 and THREE STAR ALIGNMENT USING AUTOSTAR page 52 for those procedure One Star Polar Alignment Polar One Star Alignment requires some knowledge of the night sky Autostar pro vides a library of bright stars and one star from this library is chosen by the observer for alignment Polaris is chosen by Autostar The rest of the procedure is almost iden tical to the EASY ALIGNMENT page 21 except that Autostar prompts you to point the telescope at Polaris and center it in the telescope s eyepiece Two Star Polar Alignment Polar Two Star Alignment requires some knowledge of the night sky Autostar provides a library of bright stars and two stars from this library are chosen by the observer for alignment Polaris is chosen by Autostar The rest of the procedure is almost identical to the EASY ALIGNMENT page 21 except that Autostar prompts you to point the tel escope at Polaris and center it in the telescope s eyepiece Reticle LED Knob Fig 43a The polar alignment viewfinder Fig 43b The view inside the polar alignment viewfinder reticle The Polar Alignment Viewfinder Typically Autostar s pointing capabilities are sufficient for most telescope observers and the use of the polar alignment viewfinder is unnecessary for them However for those observers who need to meet the more demanding requirements of astropho tography the polar alignment viewfinder allows the telescope mount t
124. riable height field tripod Accessories u Duan buaya 8 x 50mm finder T Adapter Super Pl ssl 26mm eyepiece 1 25 and 2 eyepiece holders Battery pack for 8 D cell batteries user supplied Autostar Controller Polar Finder Reticle Batteries Maxell LR41 or equivalent Net telescope weight 30 Ibs Net tripod weight 55 Ibs 5 f 9 3 Model AR 5AT AR 5EC Specifications Optical design Achromatic Refractor Clear aperture 5 127mm Focal length uuu sasana a kiasa gs 1180mm Focal ratio photographic speed 1 9 3 Resolving power 1 0 90 arc secs COatIngS u Lana ana isuu Meade EMC Super Multi Coatings Mounting rots Die cast aluminum Input Voltage eM 12v DC Alignment 3 need German type equatorial mount Slew Speeds SN 8 1x sidereal to 4 5 sec in 9 increments SN 8EC 2x sidereal to 4 5 sec in 4 increments Tipid i ici ee eter bee n Variable height field tripod ACCeSSOT OS au umu n edt Boh 8 x 50mm finder 1 25 diagonal Super Pl ssl 26mm eyepiece 1 25 and 2 eyepiece holders Battery pack for 8 D cell batteries user supplied AR 5 Autostar Controller AR 5EC Electronic Controller Polar Finder Reticle Batteries
125. ring a full Moon making the over ly bright surface to appear flat and rather uninteresting Consider the use of a neutral density Moon filter when observing the Moon See OPTIONAL ACCESSORIES page 38 Not only does it cut down the Moon s bright glare but it also enhances contrast providing a more dramatic image Tracking Objects As the Earth rotates beneath the night sky the stars appear to move from East to West The speed at which the stars move is called the sidereal rate You can setup your telescope to move at the sidereal rate so that it automatically tracks the stars and other objects in the night sky The tracking function automatically keeps an object more or less centered in the telescope s eyepiece To automatically track objects you first need to learn how to set the polar home position of your telescope and then how to select Targets Astronomical from the Autostar Setup menu EC handbox users see APPENDIX D page 58 for more information Setting the Polar Home Position 1 Level the mount if necessary by adjusting the length of the three tripod legs 2 Unlock the R A Lock 33 Fig 1d Rotate the Optical Tube Assembly until the counterweight shaft is pointing straight down over the mount See Figs 16a and 16b 3 f you have not already done so lift the telescope assembly and turn it so the tripod leg below the Fine Azimuth Control Knobs 27 Fig 1c approximately faces North or South in the Southern Hemisphere
126. roll keys to scroll through location information about the object if desired Press GO TO to slew the telescope to the landmark Press MODE to exit To perform a Landmark Survey This procedure allows you to perform a tour of the objects entered in the Object Landmark menu option note that the Landmark Survey will function only if you have previously entered objects in the Landmark menu 1 2 Navigate to the Utilities Landmark Survey menu and press ENTER Landmark Survey Slewing displays The telescope moves to the first object on the Survey list and displays the name of the object Press MODE to pause the Survey Press ENTER to restart the survey at the first object of the survey To Check on the Available Memory Autostar has a limited amount of memory Once you begin to store Landmarks user objects and other bits of information in Autostar you will begin to use up memory This procedure allows you to check on how much memory is still available d 2 Navigate to the Setup Statistics menu option and press ENTER Statistics 37 2K Char Free displays This is the amount of memory that is still available to the user Fig 22a LXD75 Series T Adapter attached to focuser assembly and camera 1 Camera Body 2 T Adapter 3 Focus Knob Focuser Extension Tube Fig 22b Focuser Extension Drawtube with eyepiece holder and eyepiece attached Fig 23
127. rror change the tilt of the primary mirror so that it reflects the light directly up the center of the drawtube Alignment Collimation of the Schmidt Cassegrain Optical System The optical collimation alignment of any astronomical telescope used for serious purposes is important but in the case of the Schmidt Cassegrain design of the model SC 8 such collimation is absolutely essential for good performance Take special care to read and understand this section well so that your model SC 8 will give you the best optical performance As part of final optical testing every Meade Schmidt Cassegrain is precisely colli mated at the Meade factory before shipment However vibrations in shipping can cause the optical system to become misaligned Re aligning the optics is however a straightforward process To check the collimation of your SC 8 center a bright star that is overhead or use a hot spot of reflected Sunlight from a chrome car bumper with the supplied 26mm eyepiece Allow the telescope to adjust to the temperature of your observation site before proceeding temperature differences between the optics and the outside air can cause distortion in the images With the star or hot spot centered de focus the image You will notice that the out of focus star image looks like a ring of light surrounding a dark central spot the dark cen tral spot is in fact the shadow of the secondary mirror Turn the focus knob until the ring of light
128. ry pack into this connector The telescope assembly also may be powered from either a 12v DC auto cigarette lighter plug using the optional 607 Cigarette Lighter Adapter or from a standard 115v AC home outlet using the optional 547 Power Adapter with Cable or 547F Power Adapter for 220v out lets See OPTIONAL ACCESSORIES page 38 C LED Illuminates when power is supplied to the Autostar or EC hand box and the telescope s motor drive D ON OFF Switch Turns the Computer Control Panel and Autostar ON or OFF E AUX Port Provides connection for current and future Meade accessories See OPTIONAL ACCESSORIES page 38 F Dec Port Plug the coil cord from the Dec motor assembly into this port for Autostar to control the motor drive Right Ascension R A Motor Drive Assembly Controlled by Autostar or EC handbox Moves the optical tube along the R A axis The R A Lock see e must be tightened to a firm feel in order for the R A motor to operate Latitude Adjustment T Handles 2 Sets the latitude of your observing location The two T handle screws work in a push pull operation as you tighten one loosen the other Fine Azimuth Control Knobs Fine tune the side to side movement of the tele Scope when centering Polaris in the telescope eyepiece or when using the polar alignment viewfinder see 65 Latitude Dial Set the latitude of the observing site on this dial using the latitude T handle screws For more information see S
129. s easy to use Even the most novice observer will locate dozens of fascinating celestial objects the very first night out Study Saturn and its ring system the primary cloud belts of Jupiter as well as its four major satellites the moon like phases of Mercury and Venus prominent features on Mars The Moon stands out in stark almost three dimensional detail craters mountain ranges and fault lines In our galaxy the telescope displays hundreds of nebulae star clusters double and multiple stars and variable stars plus dozens of external galaxies in all their variation of form and structure Any of Autostars database objects can be called up and entered on the hand con troller display in seconds The observer then simply presses the GO TO pushbutton and watches as the telescope automatically slews to the object and places it in the field of view Autostar moves the telescope to automatically track follow the object across the sky Autostar brings into easy access objects that were previously unreach able for all but the most dedicated of amateur astronomers Screws at the Fig 54 Mounting the SC bracket and optical tube to the mount Inh Screws at the M back end of the bracket 7 I Fig 55 Adjusting the balance of the optical tube when using heavy acces sories How to Attach the Optical Tube to the Mount The LXD75 model SC 8 Schmidt Cassegrain assembles and operates identically to al
130. s reflex viewfinder turn the telescope s focus knob 3 Fig 22a to achieve the sharpest possible focus Note that some 35mm cameras may have an optional focusing screen available from the manufacturer for use with a long telephoto lens This screen provides a brighter and clearer image to focus and is highly rec ommended 3 Correct shutter speeds vary widely depending on lighting conditions and film used Trial and error is the best way to determine proper shutter speed in any given application Note The camera used with your telescope may have an exposure meter that is still active when the standard lens is removed and the body is con nected to the telescope with the T Adapter If used for terrestrial photog raphy the camera meter should be acceptable If used for astrophotogra phy the meter probably will not provide good results since camera meters are not made to compensate for a dark sky 4 Terrestrial photography through the LXD75 Series is sensitive to heat waves rising from the Earth s surface Long distance photography is best accomplished in the early morning hours before the earth has had time to build up heat 5 Photography of the Moon and planets through the LXD75 Series can be especial ly gratifying but points 1 through 4 should be particularly noted in this case Photography with Meade s Autostar Suite The Autostar Suite with Meade LPI Lunar Planetary Imager and Planetarium soft ware turns your Meade L
131. sec Number Key 6 128x 30 arc min sec or 0 5 sec Number Key 7 1 5 90 arc min sec or 1 5 sec Number Key 8 3 180 arc min sec or 3 sec Number Key 9 Max 270 arc min sec or 4 5 sec Note If you wish to per form a more precise polar alignment for the purposes of astrophotog raphy see Appendix B page 52 shaft straight down over mount Fig 16a The polar home position side view Inset Line up triangles on the mount Fig 16a The polar home position front view Speeds 1 2 or 3 Best used for fine centering of an object in the field of view of a higher power eyepiece such as a 12mm or a 9mm eyepiece Speeds 4 5 or 6 Enables centering an object in the field of a low to moderate power eyepiece such as the standard Super Pl ssl 26mm Speeds 7 or 8 Best used for rough centering of an object in the viewfinder Speed 9 Moves the telescope quickly from one point in the sky to another Observe the Moon Point your telescope at the Moon note that the Moon is not visible every night Use your EC handbox or Autostar to practice using the Arrow keys and the slew speeds to view different features The Moon contains many interesting features including craters mountain ranges and fault lines The best time to view the Moon is during its crescent or half phase Sunlight strikes the Moon at an angle during these periods and adds a depth to the view No shadows are seen du
132. ser draw tube 1 Fig 37 with the eyepiece removed The edge of the focuser drawtube frames reflections of the primary mirror 2 Fig 37 the secondary mirror 3 Fig 37 the three spider vanes 4 Fig 37 holding the secondary mirror and the observer s eye 5 Fig 37 With the optics properly aligned all of these reflec tions appear concentric centered as shown in Fig 37 Any deviation from con centricity of any of these telescope parts with the eye requires adjustments to the secondary mirror holder Fig 35 and or the primary mirror cell Fig 36 as described below 2 Secondary mirror vane adjustments If the secondary mirror 1 Fig 38 is left or right of center within the drawtube 2 Fig 38 slightly loosen the 3 vane adjustment lock knobs 1 Fig 35 located on the outside surface of the main tube and slide the entire secondary mirror holder system up or down in the slotted holes of the main tube until the secondary mirror is centered in the drawtube If the secondary mir ror 1 Fig 38 is above or below center within the drawtube thread inward one of the adjustment lock knobs 1 Fig 35 while unthreading another of these knobs Only make adjustments to two knobs at a time until the secondary mirror appears as in Fig 39 3 Secondary mirror holder adjustments If the secondary mirror 1 Fig 39 is cen tered in the focuser drawtube 2 Fig 39 but the primary mirror is only partially vis ible in the ref
133. shaft as far as it will go Fig 5a Then slide the shaft up through the tripod mounting base 37 Fig 1c Above the mount snap the e clip into the second narrower precut slot see Fig 5a of the shaft Fig 5b Attach mount to tripod base Place the mount over the tripod mounting base 37 Fig 1c and onto the shaft with the protrusion on top of the tripod s base positioned between the fine azimuth control knobs 27 Fig 1d See Fig 5c If necessary back off the azimuth control knobs wide enough for protrusion to fit between them Tighten the T handle to a firm feel This attachment keeps the tripod and the tel escope mount securely in place Then line up the spreader bar braces so that they are each touching one of the tripods legs Tighten the tension knob 39 Fig 1c to a firm feel When you wish to collapse the tripod loosen the tension knob and move the braces off the legs You do not need to remove the T handle shaft Attach the counterweight s to the counterweight shaft Place the counter weight shaft base 20 Fig 1d over the threaded end of the shaft 22 Fig 1d Thread the shaft and base assembly into the hole beneath the Dec setting circle as depicted in Fig 6 Look through the hole in the counterweight and note the pin blocking the hole Tilt the counterweight slightly and the pin moves out of position clearing the hole If the pin does not move unscrew the counterweight lock knob slightly until the pin moves
134. sily found by direct visual observation With the telescope pointed at the North Celestial Pole the Dec circle 19 Fig 1d should read 90 understood to mean 90 Each division of the Dec circle represents a 1 increment The R A cir cle 31 Fig 1d runs from 0 to but not including 24 and reads in increments of Sun Using setting circles requires a developed technique When using the circles for the first time try hopping from one bright star the calibration star to another bright star of known coordinates Practice moving the telescope from one easy to find object to another In this way the precision required for accurate object location becomes evi dent Note You may also enter an object s R A and Dec coordinates using the User Objects option of Autostar s Object menu Autostar then automat ically slews the telescope to the entered coordinates To use the setting circles to locate an object not easily found by direct visual observation Insert a low power eyepiece such as a 26mm into the focuser assembly Pick out a bright star with which you are familiar or is easily located that is in the area of the sky in which your target object is located Look up the R A coordinate of the bright star Little Dipper o Big Dipper Polaris Cassiopeia Fig 42 Locating Polaris and also of the object you wish to locate in a star atlas Point the object at the bright star Then loosen the R
135. sing SPEED cycles back to the highest speed light 1 Slew speeds are signified by the indicator lights 2 Fig 49 Q Coil Cord Plug into the HBX connector of the Computer Control Panel Q MODE Key Press and hold MODE to place the Electronic Controller into the Mode function i e to select operation for the Northern or Southern Hemisphere See TRACKING RATES page 60 Q OUT Key Use this key to decrease the tracking rate See TRACKING RATES page 60 IN Key Use this key to increase the tracking rate See TRACKING RATES page 60 Modes of Operation When both the A and B screws are in place the Northern hemisphere polar mode is selected when power is applied e the motor drive is activated for operation in the Earth s Northern Hemisphere This is the factory default mode Remove mode screw B 2 Fig 51 to make the Southern Hemisphere polar mode the automatic default of the Electronic Controller when power is applied i e the motor drive is activated for operation in the Earth s Southern Hemisphere Remove mode screw A to disable the tracking function Select either the Northern hemisphere polar mode or the Southern Hemisphere polar mode as described above to make the tracking function available See CHANGING THE POLAR MODE page 61 for more information Meade Instruments Corporation FG 35470200 CC led to com with FCC Standards A ree Home on orroe use B No
136. site including the name latitude longitude and time zone Time Zone refers to the Greenwich Mean Time GMT time zone shift Users West of Greenwich England use hours East of Greenwich use hours For the United States look up the time zone shift in Table 1 Note Autostar compensates for daylight savings time if selected See SETUP MENU DAYLIGHT SAVING page 29 Owner Info accesses the owner information menu including Name Users may enter both their first and last names using the Up and Down Arrow keys to cycle through the alphabet Use the Right and Left Arrow keys to move through the text Press ENTER when the entry is complete Address Use the Up and Down Arrow keys to enter your street address city state and zip code Press ENTER when the entry is complete Download transfers information from another Autostar During the operation the Note The Download and warning Downloading Do Not Turn Off appears Clone functions require Clone uploads information from one Autostar handbox to another Three options are the optional 505 available Astrofinder Software and I Cable Connector Kit See m Catalogs Sends only user defined object information such as new satellite the instruction sheet orbits or comet data to another Autostar handbox included with the kit for more information on how to download gm Software Sends only the basic Autostar software This is useful if one user has down
137. star like points of light when using even the lowest magnification These moons orbit Jupiter so that the number of moons visible on any given night changes as they circle around the giant planet Saturn is nine times the diameter of Earth and appears as a small round disk with rings extending out from either side Fig 58 In 1610 Galileo the first person to observe Saturn through a telescope did not understand that what he was seeing were rings Instead he believed that Saturn had ears Saturn s rings are composed of billions of ice particles ranging in size from a speck of dust to the size of a house The major division in Saturn s rings called the Cassini Division is occasionally visi ble through the LXD75 Series Titan the largest of Saturn s moons can also be seen as a bright star like object near the planet Deep Sky Objects Star charts can be used to locate constellations individual stars and deep sky objects Examples of various deep sky objects are given below Stars are large gaseous objects that are self illuminated by nuclear fusion in their core Because of their vast distances from our solar system all stars appear as pin points of light irrespective of the size of the telescope used Nebulae are vast interstellar clouds of gas and dust where stars are formed Most impressive of these is the Great Nebula in Orion M42 a diffuse nebula that appears as a faint wispy gray cloud M42 is 1600 light years from Earth
138. t Autostar for information about planets Scroll to the Object Solar System menu and scroll through the lists of planets When a planet you are interested in displays press ENTER Use the Scroll keys to display information about the planet such as the planet s coordinates and the rise and set times Tip enter a date in the Date menu and you can determine if a planet s will be visible during the night of the entered date by checking its rise and set times Listed below are the best planets for viewing through the LXD75 Series Venus is about nine tenths the diameter of Earth As Venus orbits the Sun observers can see it go through phases crescent half and full much like those of the Moon The disk of Venus appears white as Sunlight is reflected off the thick cloud cover that completely obscures any surface detail Mars is about half the diameter of Earth and appears through the telescope as a tiny reddish orange disk It may be possible to see a hint of white at one of the planet s Polar ice caps Approximately every two years when Mars is closest to Earth in its orbit additional detail and coloring on the planet s surface may be visible Jupiter is the largest planet in our solar system and is eleven times the diameter of Earth The planet appears as a disk with dark lines stretching across the surface Fig 57 These lines are cloud bands in the atmosphere Four of Jupiter s moons lo Europa Ganymede and Callisto can be seen as
139. te Removing either A or B screw affects only the telescope s default Fig 51 Mode screws on rear of mode you may still make mode changes when desired using the MODE key Electronic Controller 1 Mode Screw A 2 Mode Screw B Definition Sidereal As the Earth rotates beneath the night sky the stars appear to move from East to West The speed at which the stars move is called the side real rate You can setup your telescope to move at the sidereal rate so that it automatically tracks the stars and other objects in the night sky The tracking function automatically keeps an object more or less cen tered in the telescope s eyepiece See pages 17 and 18 for more information Slew Speeds The Electronic Controller has four slew speeds that are directly proportional to the sidereal rate Press SPEED to change the slew speed use the Arrow keys to slew the telescope in the desired direction Note each slew speed corresponds to one of the four LED s of the Electronic Controller Light 1 top LED The fastest speed Use to move the telescope quickly from one point in the sky to another Light 2 Best for centering an object in the viewfinder Light 3 Best for centering an object in the field of a low to moderate power eyepiece such as the standard SP 26mm Light 4 The slowest speed Use to center an object in the field of view of high power eyepieces such as the optional 6 7mm or 12 4mm The four ava
140. tep 6 page 12 Polar Alignment Viewfinder Allows you to precisely polar align the telescope Useful when performing astrophotography See page 52 Polar Alignment Viewfinder Reticle and LED Knob Rotate the knob to switch on or off the LED that illuminates the reticle within the polar alignment finder Be e Want to learn more about the polar align ment viewfinder See the The Polar Alignment Viewfinder page 52 Fig 1g The LXD75 Series Battery Pack and holder Want to learn how to install the batteries See step 12 page 13 Caution Use care to install batteries as indicat ed by the battery com partment Follow battery manufacturer s precau tions Do not install batter ies backwards or mix new and used batteries Do not mix battery types If these precautions are not followed batteries may explode catch fire or leak Improperly installed batteries void your Meade warranty Always remove the batteries if they are not to be used for a long period of time oe e e o 6886 8 6G sure to turn off the LED when finished with the polar viewfinder Powered by fac tory supplied batteries contained within R A Setting Circle See APPENDIX A page 50 for more information R A Setting Circle Lock Knob Rotate the knob to lock the R A Setting Circle see in place R A Lock Controls the manual movement of the telescope Turning the R A lock
141. the forward tripod leg increase the length of the two rear tripod legs to introduce a tilt into the whole mount Before starting the alignment procedure it is helpful to have the tripod azimuth adjustment knobs even to allow an equal range of travel in either direction Make sure the focuser lock is tightened once focus is achieved Otherwise grav ity may cause the focuser to move during rotation of the telescope and introduce error into the procedure Method 3 Axis Alignment Using Autostar Perform this procedure during the daytime You will need to have an unobstructed view of an easily sighted landmark such as a light post Use a low power eyepiece such as the supplied 26mm This procedure assumes that you have some familiarity with Autostar s menu structure you will need to locate the Setup Telescope menu If necessary refer to AUTOSTAR S MENUS page 25 Note For best result perform this procedure after you have trained the drive See page 20 Adjust the latitude T handle screws 26 Fig 1d so that the latitude is set to 45 or higher See Step 6 page 12 for information about setting the latitude con trols Refer to Fig 48 while performing this step The Dec motor B must be positioned so that it is at the back of the mount The optical tube A must be approximately horizontal e parallel with the horizon and the counterweight shaft must be pointing straight down If using a Schmidt Newtonian model loosen th
142. thin a compact handbox Autostar has soft touch keys designed to have a pos itive feel The LCD Liquid Crystal Display is backlit with a red LED Light Emitting Diode for easy viewing in the dark The backlit display key arrangement and sequen tial menu structure make Autostar extremely user friendly Q 2 Line LcD Display This screen displays Autostar s menus and other informa tion about the telescope m Top line Lists the primary menu m Bottom line Contains other menus that may be selected menu options tele Scope status or information about a function that is currently being performed ENTER Key Press to go to the next menu level or to choose an option in a menu The ENTER key is similar to the RETURN or ENTER key on a computer See MOVING THROUGH AUTOSTAR S MENUS page 19 and AUTOSTAR S MENUS page 25 Tip If the ENTER to Sync feature is accessed by mistake press MODE to return to the previous Screen 0 Want to learn more about using the GO TO function See page 21 Want to learn how to perform a spiral search See page 21 Definitions Slew means to move the telescope s optical tube to a selected object Fig 3 Spread out the tripod legs See next page hread shaft through the mounting base Spreader Bar Braces Tension T Fig 4 Thread T handle shaft into base See next page Note If ENTER
143. tion in the Select Item menu Tip When multiple choices are available within a menu option the current option is usually displayed first and highlighted by a right point ing arrow 8 9 Press the ENTER key to choose the Event option and move down a level Event Sunrise is displayed Press the Scroll Down key once to display the Sunset option in the Event menu Press the ENTER key to choose the Sunset option and move down another level Autostar calculates the Sunset time based on the current date time and location Autostar then displays the results of the calculation Press MODE once to start moving back up through the Autostar levels The first level up is the Event menu Press MODE again to move up another level This is the top level Select Item Press MODE again to return to the starting point of Select Item Object Entering Data into Autostar Use the Number keys to enter digits Use the Arrow keys to scroll through numbers 0 through 9 and the alphabet The Down Arrow key begins with the letter A the Up Arrow key begins with digit 9 To move the cursor across the display Use the Right or Left Arrow key 5 Fig 2 to move the cursor from one number to the next in the display Press ENTER when the desired information has been entered Navigating Autostar Autostar s menus are organized for quick and easy navigation Press ENTER 2 Fig 2 to go deeper into Autost
144. to perform periodic error correction PEC on the R A drive worm gear Must be performed with a high power reticle eg 9mm High Precision If High Precision is turned on when looking for a faint celestial object e a nebula or galaxy Autostar first slews to a nearby bright star and displays ENTER to Sync Center the star in the eyepiece then press ENTER At that point the telescope has a high precision alignment to that part of the sky and it then slews to the object that was originally requested Targets switches between Astronomical targets and Terrestrial targets If Astronomical is selected the telescope tracking motor is activated and any object you observe will remain centered in the eyepiece If Terrestrial is selected the track ing motor is turned off To learn how to track an object automatically see page 18 Site provides access to several options including Select Displays the currently selected observing site Use the Scroll keys to cycle through all available sites see ADD below Press ENTER when the site you wish to select displays Use this option when you move to a different geo graphic location Add Allows you to add new observing sites to the database up to six sites may be stored Scroll through the list of Countries States Press ENTER when the site you wish to add displays Then choose the desired city in the same manner Delete Deletes a stored site from the database Edit Edits a selected
145. tries states and provinces Press ENTER when the correct location displays b Autostar then prompts you to enter the nearest city listed alphabetically to the observing site Use the Scroll keys to cycle through the database of cities Press ENTER when the correct city appears on screen Autostar then prompts you to enter the model number of your telescope Use the Scroll keys to cycle through the list of telescope models Press ENTER when the correct model appears on the display Note Autostar only prompts you to enter Country State and City and model number the first time it is activated These prompts do not appear again unless you reset Autostar see RESET page 31 However if you need to enter this information e g you change your geographic location you can do so by using the Site option of the Setup menu See ADDING OBSERVING SITES page 32 for detailed information System Initialization is complete and the display reads Align Easy After per forming the Initialization procedure you MUST train your drive Training the Drive Autostar Models Only Next train the drive using Autostar Perform this procedure the first time you use Autostar with your telescope after a Reset or if you are experiencing any pointing accuracy problems Training the drive gives your telescope a higher degree of point ing accuracy O m gt F Q N 11 12 13 14 Note Use a terrestrial object such as a telephone po
146. vate Autostar and the telescope Park Scope is designed for a telescope that is not moved between observing ses sions Align the telescope one time then use this function to park the telescope Next time it is powered up enter the correct date and time no alignment is required Pressing ENTER causes the telescope to move to its pre determined Park position Once parked the screen prompts to turn off power Important Note When the Park Scope option is chosen and the display prompts you to turn off the telescope s power Autostar is unable to be returned to operation without turning the power off and then back on Cord Wrap moves the telescope in such a way as to prevent the cords and cables attached to your telescope assembly from getting wound around the assembly and tan gled as the telescope slews to objects This menu is set to On and cannot be changed by the user Setup Menu The Setup menu s primary functions are for setting up telescope alignment However there are numerous other features available within the Setup menu including Date changes the date used by Autostar This function is useful to check events in the past or future For example set the Date menu for a day three months in the future M Then check the Select Item Event menu for the Sunset time on that date See Want to learn more about EVENT MENU page 27 using the Date menu Time changes the time entered into Autostar Setting the correct time is
147. with your basic enjoyment of the instrument Tip You can change the tele scope s slew rate while centering an object in the eyepiece See SLEW SPEEDS page 16 for more information Important Note While performing the automatic tracking procedure you may use the Arrow keys to move the telescope or you may also loosen the telescope locks 17 and 33 Fig 1d and move the optical tube manually to locate another object in the sky The tracking function will continue to be operational and the telescope will track the new object Y Observe a Star using the Automatic Tracking Feature In this example Autostar s Arrow keys are used to find a star and then Autostar s tracking capability automatically keeps the star centered in your telescope s eyepiece EC handbox users see APPENDIX D page 58 for information about tracking with the EC handbox 1 If you have activated the Arrow keys and completed setting the telescope in the polar home position Autostar s display now reads Align Easy Go to Step 2 If you have not used Autostar yet or have just plugged it into the HBX port per form the procedures described in ACTIVATE THE ARROW KEYS page 16 and SET TING THE POLAR HOME POSITION page 17 Then go to Step 2 of this procedure If you have been using Autostar to perform other functions and the display does not read Align Easy follow these steps a Press MODE 3 Fig 2 repeatedly until Select It
148. y find after your initial adjustment that the dark center is off in a new direc tion e g instead of being off side to side it is now off in an up and down direc tion In this case repeat steps b through f to find the new adjustment screw h Now try a higher power eyepiece e g 9mm or less and repeat the above tests Any lack of collimation at this point will require only very slight adjustments of the three set screws You now have good collimation of the optics i As a final check of alignment examine the star image in focus with the higher power eyepiece as suggested j under good viewing conditions The star point should appear as a small central dot commonly referred to as an Airy disc with a diffraction ring surrounding it To give a final precision collimation make extremely slight adjustments of the three set screws if necessary to center the Airy disc in the diffraction ring You now have the best alignment of the optics pos sible with this telescope Alignment Collimation of the Newtonian Reflector Optical System The optical systems of Newtonian Reflector telescopes include the following parts pri mary mirror 1 Fig 34 secondary mirror 2 Fig 34 secondary mirror holder 3 Fig 34 secondary mirror vanes 4 Fig 34 and 1 Fig 35 primary mirror tilt screws 5 Fig 34 The telescope s image is brought to a focus at 6 Fig 34 1 Confirm alignment To confirm optical alignment look down the focu
149. your finger is aiming It will either be pointing directly at a set screw or it will be between two set screws aiming at the set screw on the far side of the black plastic secondary mirror sup port This is the set screw that you will adjust c Using the Autostar s Arrow keys at the slowest slew speed move the defocused image to the edge of the eyepiece field of view 2 Fig 33a in the same direc tion as the darker shadow is offset in the ring of light d Turn the set screw that you found with the pointing exercise while looking in the eyepiece You will notice that the star image will move across the field If while turning the defocused star image flies out of the eyepiece field then you are turn ing the screw the wrong way Turn the opposite direction and bring the image back to the center of the field e If the screw you are turning becomes very loose tighten the other two screws by even amounts If the screw you are turning gets too tight unthread the other two by even amounts f When you bring the image to center 3 Fig 33a carefully examine the evenness of the ring of light concentricity If you find that the dark center is still off in the same direction continue to make the adjustment in the original turning direction If it is now off in the opposite direction you have turned too far and you need to turn in the opposite direction Always double check the image in the center of the field of the eyepiece g You ma
150. ys during a 10 hour period Algol undergoes a major change in apparent magnitude as one of the two stars passes behind the other The combined magnitude of the two stars thus dips from 42 1 to a minimum of 3 4 halfway through the eclipse as the sec ond star is hidden Autostar calculates minimum magnitude time at mid eclipse Autumn and Vernal Equinox calculates the time and date of the fall or spring equi nox of the current year Winter and Summer Solstice calculates the time and date of the winter or summer solstice of the current year Glossary Menu The Glossary menu provides an alphabetical listing of definitions and descriptions for common astronomical terms and Autostar functions Access directly through the Glossary menu or through hypertext words embedded in Autostar A hypertext word is any word in brackets usually found when using the Autostar Help function or when reading a scrolling message such as a description of a planet or star Press ENTER whenever a hypertext word is on screen and Autostar goes to the glossary entry for that word To access directly from the Glossary menu use the Scroll keys to scroll through the alphabet Press ENTER on the desired letter Scroll to the desired entry and then press ENTER to read the description Utilities Menu The Utilities menu provides access to several extra features within Autostar including a countdown timer and an alarm The Utilities functions include Timer selects a countdow

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